Home / 78,454.90-108,292.53-50,160.70

Finding the Fourth Proportional to 78,454.90, 108,292.53 and 50,160.70

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Solution

The fourth proportional to 78,454.90, 108,292.53 and 50,160.70 is: 69,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,454.90 : 108,292.53 = 50,160.70 : x
  2. Step 2: Convert to fraction form
    78,454.90/108,292.53 = 50,160.70/x
  3. Step 3: Cross multiply
    78,454.90x = 108,292.53 × 50,160.70
  4. Step 4: Simplify right side
    78,454.90x = 5,432,029,109.57
  5. Step 5: Solve for x
    x = 5,432,029,109.57/78,454.90
  6. Step 6: Final answer
    x = 69,237.60

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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.