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Finding the Fourth Proportional to 83,316.80, 124,988.16 and 27,143.83

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Solution

The fourth proportional to 83,316.80, 124,988.16 and 27,143.83 is: 40,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,316.80 : 124,988.16 = 27,143.83 : x
  2. Step 2: Convert to fraction form
    83,316.80/124,988.16 = 27,143.83/x
  3. Step 3: Cross multiply
    83,316.80x = 124,988.16 × 27,143.83
  4. Step 4: Simplify right side
    83,316.80x = 3,392,657,523.29
  5. Step 5: Solve for x
    x = 3,392,657,523.29/83,316.80
  6. Step 6: Final answer
    x = 40,719.97

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1.5x scale

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.