Home / 78,442.20-108,250.92-42,632.24

Finding the Fourth Proportional to 78,442.20, 108,250.92 and 42,632.24

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Solution

The fourth proportional to 78,442.20, 108,250.92 and 42,632.24 is: 58,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,442.20 : 108,250.92 = 42,632.24 : x
  2. Step 2: Convert to fraction form
    78,442.20/108,250.92 = 42,632.24/x
  3. Step 3: Cross multiply
    78,442.20x = 108,250.92 × 42,632.24
  4. Step 4: Simplify right side
    78,442.20x = 4,614,979,201.66
  5. Step 5: Solve for x
    x = 4,614,979,201.66/78,442.20
  6. Step 6: Final answer
    x = 58,832.86

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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.