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Finding the Fourth Proportional to 83,425.95, 115,127.87 and 45,185.58

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Solution

The fourth proportional to 83,425.95, 115,127.87 and 45,185.58 is: 62,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,425.95 : 115,127.87 = 45,185.58 : x
  2. Step 2: Convert to fraction form
    83,425.95/115,127.87 = 45,185.58/x
  3. Step 3: Cross multiply
    83,425.95x = 115,127.87 × 45,185.58
  4. Step 4: Simplify right side
    83,425.95x = 5,202,119,354.19
  5. Step 5: Solve for x
    x = 5,202,119,354.19/83,425.95
  6. Step 6: Final answer
    x = 62,356.13

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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.