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Finding the Fourth Proportional to 61,354.68, 84,643.02 and 38,675.76

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Solution

The fourth proportional to 61,354.68, 84,643.02 and 38,675.76 is: 53,355.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,354.68 : 84,643.02 = 38,675.76 : x
  2. Step 2: Convert to fraction form
    61,354.68/84,643.02 = 38,675.76/x
  3. Step 3: Cross multiply
    61,354.68x = 84,643.02 × 38,675.76
  4. Step 4: Simplify right side
    61,354.68x = 3,273,633,127.20
  5. Step 5: Solve for x
    x = 3,273,633,127.20/61,354.68
  6. Step 6: Final answer
    x = 53,355.88

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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.