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Finding the Fourth Proportional to 79,167.84, 109,251.76 and 42,869.68

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Solution

The fourth proportional to 79,167.84, 109,251.76 and 42,869.68 is: 59,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,167.84 : 109,251.76 = 42,869.68 : x
  2. Step 2: Convert to fraction form
    79,167.84/109,251.76 = 42,869.68/x
  3. Step 3: Cross multiply
    79,167.84x = 109,251.76 × 42,869.68
  4. Step 4: Simplify right side
    79,167.84x = 4,683,587,990.64
  5. Step 5: Solve for x
    x = 4,683,587,990.64/79,167.84
  6. Step 6: Final answer
    x = 59,160.23

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1.5x scale

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.