Home / 78,278.20-108,023.94-42,468.76

Finding the Fourth Proportional to 78,278.20, 108,023.94 and 42,468.76

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Solution

The fourth proportional to 78,278.20, 108,023.94 and 42,468.76 is: 58,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278.20 : 108,023.94 = 42,468.76 : x
  2. Step 2: Convert to fraction form
    78,278.20/108,023.94 = 42,468.76/x
  3. Step 3: Cross multiply
    78,278.20x = 108,023.94 × 42,468.76
  4. Step 4: Simplify right side
    78,278.20x = 4,587,642,782.11
  5. Step 5: Solve for x
    x = 4,587,642,782.11/78,278.20
  6. Step 6: Final answer
    x = 58,606.90

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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.