Home / 78,934.28-118,407.42-26,343.68

Finding the Fourth Proportional to 78,934.28, 118,407.42 and 26,343.68

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Solution

The fourth proportional to 78,934.28, 118,407.42 and 26,343.68 is: 39,517.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,934.28 : 118,407.42 = 26,343.68 : x
  2. Step 2: Convert to fraction form
    78,934.28/118,407.42 = 26,343.68/x
  3. Step 3: Cross multiply
    78,934.28x = 118,407.42 × 26,343.68
  4. Step 4: Simplify right side
    78,934.28x = 3,119,286,590.07
  5. Step 5: Solve for x
    x = 3,119,286,590.07/78,934.28
  6. Step 6: Final answer
    x = 39,517.52

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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.