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Finding the Fourth Proportional to 79,281.76, 109,398.80 and 43,462.34

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Solution

The fourth proportional to 79,281.76, 109,398.80 and 43,462.34 is: 59,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,281.76 : 109,398.80 = 43,462.34 : x
  2. Step 2: Convert to fraction form
    79,281.76/109,398.80 = 43,462.34/x
  3. Step 3: Cross multiply
    79,281.76x = 109,398.80 × 43,462.34
  4. Step 4: Simplify right side
    79,281.76x = 4,754,727,841.19
  5. Step 5: Solve for x
    x = 4,754,727,841.19/79,281.76
  6. Step 6: Final answer
    x = 59,972.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.