Home / 78,557.15-117,854.18-25,966.64

Finding the Fourth Proportional to 78,557.15, 117,854.18 and 25,966.64

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Solution

The fourth proportional to 78,557.15, 117,854.18 and 25,966.64 is: 38,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,557.15 : 117,854.18 = 25,966.64 : x
  2. Step 2: Convert to fraction form
    78,557.15/117,854.18 = 25,966.64/x
  3. Step 3: Cross multiply
    78,557.15x = 117,854.18 × 25,966.64
  4. Step 4: Simplify right side
    78,557.15x = 3,060,276,540.20
  5. Step 5: Solve for x
    x = 3,060,276,540.20/78,557.15
  6. Step 6: Final answer
    x = 38,956.05

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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.