Home / 78,557.67-117,854.96-25,967.15

Finding the Fourth Proportional to 78,557.67, 117,854.96 and 25,967.15

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Solution

The fourth proportional to 78,557.67, 117,854.96 and 25,967.15 is: 38,956.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,557.67 : 117,854.96 = 25,967.15 : x
  2. Step 2: Convert to fraction form
    78,557.67/117,854.96 = 25,967.15/x
  3. Step 3: Cross multiply
    78,557.67x = 117,854.96 × 25,967.15
  4. Step 4: Simplify right side
    78,557.67x = 3,060,357,589.37
  5. Step 5: Solve for x
    x = 3,060,357,589.37/78,557.67
  6. Step 6: Final answer
    x = 38,956.83

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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.