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Finding the Fourth Proportional to 85,377.48, 128,081.40 and 29,223.84

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Solution

The fourth proportional to 85,377.48, 128,081.40 and 29,223.84 is: 43,840.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,377.48 : 128,081.40 = 29,223.84 : x
  2. Step 2: Convert to fraction form
    85,377.48/128,081.40 = 29,223.84/x
  3. Step 3: Cross multiply
    85,377.48x = 128,081.40 × 29,223.84
  4. Step 4: Simplify right side
    85,377.48x = 3,743,030,340.58
  5. Step 5: Solve for x
    x = 3,743,030,340.58/85,377.48
  6. Step 6: Final answer
    x = 43,840.96

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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.