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Finding the Fourth Proportional to 98,686.52, 148,037.97 and 39,489.89

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Solution

The fourth proportional to 98,686.52, 148,037.97 and 39,489.89 is: 59,238.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,686.52 : 148,037.97 = 39,489.89 : x
  2. Step 2: Convert to fraction form
    98,686.52/148,037.97 = 39,489.89/x
  3. Step 3: Cross multiply
    98,686.52x = 148,037.97 × 39,489.89
  4. Step 4: Simplify right side
    98,686.52x = 5,846,003,151.12
  5. Step 5: Solve for x
    x = 5,846,003,151.12/98,686.52
  6. Step 6: Final answer
    x = 59,238.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.