Home / 78,986.38-118,374.45-38,944.24

Finding the Fourth Proportional to 78,986.38, 118,374.45 and 38,944.24

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Solution

The fourth proportional to 78,986.38, 118,374.45 and 38,944.24 is: 58,364.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986.38 : 118,374.45 = 38,944.24 : x
  2. Step 2: Convert to fraction form
    78,986.38/118,374.45 = 38,944.24/x
  3. Step 3: Cross multiply
    78,986.38x = 118,374.45 × 38,944.24
  4. Step 4: Simplify right side
    78,986.38x = 4,610,002,990.67
  5. Step 5: Solve for x
    x = 4,610,002,990.67/78,986.38
  6. Step 6: Final answer
    x = 58,364.53

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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.