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Finding the Fourth Proportional to 71,459.70, 98,614.98 and 39,629.04

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Solution

The fourth proportional to 71,459.70, 98,614.98 and 39,629.04 is: 54,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,459.70 : 98,614.98 = 39,629.04 : x
  2. Step 2: Convert to fraction form
    71,459.70/98,614.98 = 39,629.04/x
  3. Step 3: Cross multiply
    71,459.70x = 98,614.98 × 39,629.04
  4. Step 4: Simplify right side
    71,459.70x = 3,908,016,987.02
  5. Step 5: Solve for x
    x = 3,908,016,987.02/71,459.70
  6. Step 6: Final answer
    x = 54,688.40

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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.