Home / 47,909.28-66,118.32-31,190.88

Finding the Fourth Proportional to 47,909.28, 66,118.32 and 31,190.88

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Solution

The fourth proportional to 47,909.28, 66,118.32 and 31,190.88 is: 43,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,909.28 : 66,118.32 = 31,190.88 : x
  2. Step 2: Convert to fraction form
    47,909.28/66,118.32 = 31,190.88/x
  3. Step 3: Cross multiply
    47,909.28x = 66,118.32 × 31,190.88
  4. Step 4: Simplify right side
    47,909.28x = 2,062,288,584.92
  5. Step 5: Solve for x
    x = 2,062,288,584.92/47,909.28
  6. Step 6: Final answer
    x = 43,045.70

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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.