Home / 87,631.30-131,446.95-54,243.10

Finding the Fourth Proportional to 87,631.30, 131,446.95 and 54,243.10

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Solution

The fourth proportional to 87,631.30, 131,446.95 and 54,243.10 is: 81,364.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.30 : 131,446.95 = 54,243.10 : x
  2. Step 2: Convert to fraction form
    87,631.30/131,446.95 = 54,243.10/x
  3. Step 3: Cross multiply
    87,631.30x = 131,446.95 × 54,243.10
  4. Step 4: Simplify right side
    87,631.30x = 7,130,090,053.55
  5. Step 5: Solve for x
    x = 7,130,090,053.55/87,631.30
  6. Step 6: Final answer
    x = 81,364.65

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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.