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Finding the Fourth Proportional to 68,570.80, 102,856.20 and 29,100.23

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Solution

The fourth proportional to 68,570.80, 102,856.20 and 29,100.23 is: 43,650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,570.80 : 102,856.20 = 29,100.23 : x
  2. Step 2: Convert to fraction form
    68,570.80/102,856.20 = 29,100.23/x
  3. Step 3: Cross multiply
    68,570.80x = 102,856.20 × 29,100.23
  4. Step 4: Simplify right side
    68,570.80x = 2,993,138,931.42
  5. Step 5: Solve for x
    x = 2,993,138,931.42/68,570.80
  6. Step 6: Final answer
    x = 43,650.35

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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.