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Finding the Fourth Proportional to 98,800.92, 148,229.13 and 39,678.11

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Solution

The fourth proportional to 98,800.92, 148,229.13 and 39,678.11 is: 59,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,800.92 : 148,229.13 = 39,678.11 : x
  2. Step 2: Convert to fraction form
    98,800.92/148,229.13 = 39,678.11/x
  3. Step 3: Cross multiply
    98,800.92x = 148,229.13 × 39,678.11
  4. Step 4: Simplify right side
    98,800.92x = 5,881,450,984.20
  5. Step 5: Solve for x
    x = 5,881,450,984.20/98,800.92
  6. Step 6: Final answer
    x = 59,528.30

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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.