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Finding the Fourth Proportional to 98,572.96, 147,964.66 and 42,440.86

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Solution

The fourth proportional to 98,572.96, 147,964.66 and 42,440.86 is: 63,706.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,572.96 : 147,964.66 = 42,440.86 : x
  2. Step 2: Convert to fraction form
    98,572.96/147,964.66 = 42,440.86/x
  3. Step 3: Cross multiply
    98,572.96x = 147,964.66 × 42,440.86
  4. Step 4: Simplify right side
    98,572.96x = 6,279,747,420.01
  5. Step 5: Solve for x
    x = 6,279,747,420.01/98,572.96
  6. Step 6: Final answer
    x = 63,706.59

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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.