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Finding the Fourth Proportional to 71,312.59, 98,407.46 and 39,040.96

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Solution

The fourth proportional to 71,312.59, 98,407.46 and 39,040.96 is: 53,874.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,312.59 : 98,407.46 = 39,040.96 : x
  2. Step 2: Convert to fraction form
    71,312.59/98,407.46 = 39,040.96/x
  3. Step 3: Cross multiply
    71,312.59x = 98,407.46 × 39,040.96
  4. Step 4: Simplify right side
    71,312.59x = 3,841,921,709.56
  5. Step 5: Solve for x
    x = 3,841,921,709.56/71,312.59
  6. Step 6: Final answer
    x = 53,874.38

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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.