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Finding the Fourth Proportional to 71,308.49, 98,401.97 and 39,036.92

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Solution

The fourth proportional to 71,308.49, 98,401.97 and 39,036.92 is: 53,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,308.49 : 98,401.97 = 39,036.92 : x
  2. Step 2: Convert to fraction form
    71,308.49/98,401.97 = 39,036.92/x
  3. Step 3: Cross multiply
    71,308.49x = 98,401.97 × 39,036.92
  4. Step 4: Simplify right side
    71,308.49x = 3,841,309,881.55
  5. Step 5: Solve for x
    x = 3,841,309,881.55/71,308.49
  6. Step 6: Final answer
    x = 53,868.90

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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.