Home / 84,122.08-126,178.17-31,527.16

Finding the Fourth Proportional to 84,122.08, 126,178.17 and 31,527.16

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Solution

The fourth proportional to 84,122.08, 126,178.17 and 31,527.16 is: 47,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,122.08 : 126,178.17 = 31,527.16 : x
  2. Step 2: Convert to fraction form
    84,122.08/126,178.17 = 31,527.16/x
  3. Step 3: Cross multiply
    84,122.08x = 126,178.17 × 31,527.16
  4. Step 4: Simplify right side
    84,122.08x = 3,978,039,354.10
  5. Step 5: Solve for x
    x = 3,978,039,354.10/84,122.08
  6. Step 6: Final answer
    x = 47,288.88

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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.