Home / 78,475.20-108,247.18-68,427.76

Finding the Fourth Proportional to 78,475.20, 108,247.18 and 68,427.76

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Solution

The fourth proportional to 78,475.20, 108,247.18 and 68,427.76 is: 94,387.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,475.20 : 108,247.18 = 68,427.76 : x
  2. Step 2: Convert to fraction form
    78,475.20/108,247.18 = 68,427.76/x
  3. Step 3: Cross multiply
    78,475.20x = 108,247.18 × 68,427.76
  4. Step 4: Simplify right side
    78,475.20x = 7,407,112,053.72
  5. Step 5: Solve for x
    x = 7,407,112,053.72/78,475.20
  6. Step 6: Final answer
    x = 94,387.93

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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.