Home / 78,462.24-108,278.40-42,652.56

Finding the Fourth Proportional to 78,462.24, 108,278.40 and 42,652.56

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Solution

The fourth proportional to 78,462.24, 108,278.40 and 42,652.56 is: 58,860.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,462.24 : 108,278.40 = 42,652.56 : x
  2. Step 2: Convert to fraction form
    78,462.24/108,278.40 = 42,652.56/x
  3. Step 3: Cross multiply
    78,462.24x = 108,278.40 × 42,652.56
  4. Step 4: Simplify right side
    78,462.24x = 4,618,350,952.70
  5. Step 5: Solve for x
    x = 4,618,350,952.70/78,462.24
  6. Step 6: Final answer
    x = 58,860.81

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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.