Home / 83,631.06-115,462.89-58,129.38

Finding the Fourth Proportional to 83,631.06, 115,462.89 and 58,129.38

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Solution

The fourth proportional to 83,631.06, 115,462.89 and 58,129.38 is: 80,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,631.06 : 115,462.89 = 58,129.38 : x
  2. Step 2: Convert to fraction form
    83,631.06/115,462.89 = 58,129.38/x
  3. Step 3: Cross multiply
    83,631.06x = 115,462.89 × 58,129.38
  4. Step 4: Simplify right side
    83,631.06x = 6,711,786,208.71
  5. Step 5: Solve for x
    x = 6,711,786,208.71/83,631.06
  6. Step 6: Final answer
    x = 80,254.71

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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.