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Finding the Fourth Proportional to 85,298.80, 127,948.20 and 29,894.80

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Solution

The fourth proportional to 85,298.80, 127,948.20 and 29,894.80 is: 44,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,298.80 : 127,948.20 = 29,894.80 : x
  2. Step 2: Convert to fraction form
    85,298.80/127,948.20 = 29,894.80/x
  3. Step 3: Cross multiply
    85,298.80x = 127,948.20 × 29,894.80
  4. Step 4: Simplify right side
    85,298.80x = 3,824,985,849.36
  5. Step 5: Solve for x
    x = 3,824,985,849.36/85,298.80
  6. Step 6: Final answer
    x = 44,842.20

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.