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Finding the Fourth Proportional to 98,472.72, 147,618.12 and 39,294

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Solution

The fourth proportional to 98,472.72, 147,618.12 and 39,294 is: 58,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,472.72 : 147,618.12 = 39,294 : x
  2. Step 2: Convert to fraction form
    98,472.72/147,618.12 = 39,294/x
  3. Step 3: Cross multiply
    98,472.72x = 147,618.12 × 39,294
  4. Step 4: Simplify right side
    98,472.72x = 5,800,506,407.28
  5. Step 5: Solve for x
    x = 5,800,506,407.28/98,472.72
  6. Step 6: Final answer
    x = 58,904.70

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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.