Home / 81,186.38-112,035.14-45,376.70

Finding the Fourth Proportional to 81,186.38, 112,035.14 and 45,376.70

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Solution

The fourth proportional to 81,186.38, 112,035.14 and 45,376.70 is: 62,618.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186.38 : 112,035.14 = 45,376.70 : x
  2. Step 2: Convert to fraction form
    81,186.38/112,035.14 = 45,376.70/x
  3. Step 3: Cross multiply
    81,186.38x = 112,035.14 × 45,376.70
  4. Step 4: Simplify right side
    81,186.38x = 5,083,784,937.24
  5. Step 5: Solve for x
    x = 5,083,784,937.24/81,186.38
  6. Step 6: Final answer
    x = 62,618.69

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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.