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Finding the Fourth Proportional to 71,568.36, 98,773.02 and 39,740.76

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Solution

The fourth proportional to 71,568.36, 98,773.02 and 39,740.76 is: 54,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,568.36 : 98,773.02 = 39,740.76 : x
  2. Step 2: Convert to fraction form
    71,568.36/98,773.02 = 39,740.76/x
  3. Step 3: Cross multiply
    71,568.36x = 98,773.02 × 39,740.76
  4. Step 4: Simplify right side
    71,568.36x = 3,925,314,882.30
  5. Step 5: Solve for x
    x = 3,925,314,882.30/71,568.36
  6. Step 6: Final answer
    x = 54,847.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.