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Finding the Fourth Proportional to 79,864.68, 119,695.25 and 42,442.68

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Solution

The fourth proportional to 79,864.68, 119,695.25 and 42,442.68 is: 63,609.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,864.68 : 119,695.25 = 42,442.68 : x
  2. Step 2: Convert to fraction form
    79,864.68/119,695.25 = 42,442.68/x
  3. Step 3: Cross multiply
    79,864.68x = 119,695.25 × 42,442.68
  4. Step 4: Simplify right side
    79,864.68x = 5,080,186,981.06
  5. Step 5: Solve for x
    x = 5,080,186,981.06/79,864.68
  6. Step 6: Final answer
    x = 63,609.93

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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.