Home / 78,850.85-118,199.73-31,452.17

Finding the Fourth Proportional to 78,850.85, 118,199.73 and 31,452.17

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Solution

The fourth proportional to 78,850.85, 118,199.73 and 31,452.17 is: 47,147.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.85 : 118,199.73 = 31,452.17 : x
  2. Step 2: Convert to fraction form
    78,850.85/118,199.73 = 31,452.17/x
  3. Step 3: Cross multiply
    78,850.85x = 118,199.73 × 31,452.17
  4. Step 4: Simplify right side
    78,850.85x = 3,717,638,001.91
  5. Step 5: Solve for x
    x = 3,717,638,001.91/78,850.85
  6. Step 6: Final answer
    x = 47,147.72

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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.