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Finding the Fourth Proportional to 83,116.68, 114,699.42 and 45,391.20

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Solution

The fourth proportional to 83,116.68, 114,699.42 and 45,391.20 is: 62,638.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,116.68 : 114,699.42 = 45,391.20 : x
  2. Step 2: Convert to fraction form
    83,116.68/114,699.42 = 45,391.20/x
  3. Step 3: Cross multiply
    83,116.68x = 114,699.42 × 45,391.20
  4. Step 4: Simplify right side
    83,116.68x = 5,206,344,313.10
  5. Step 5: Solve for x
    x = 5,206,344,313.10/83,116.68
  6. Step 6: Final answer
    x = 62,638.98

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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.