Home / 78,988.32-118,351.80-47,759.04

Finding the Fourth Proportional to 78,988.32, 118,351.80 and 47,759.04

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Solution

The fourth proportional to 78,988.32, 118,351.80 and 47,759.04 is: 71,559.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,988.32 : 118,351.80 = 47,759.04 : x
  2. Step 2: Convert to fraction form
    78,988.32/118,351.80 = 47,759.04/x
  3. Step 3: Cross multiply
    78,988.32x = 118,351.80 × 47,759.04
  4. Step 4: Simplify right side
    78,988.32x = 5,652,368,350.27
  5. Step 5: Solve for x
    x = 5,652,368,350.27/78,988.32
  6. Step 6: Final answer
    x = 71,559.55

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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.