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Finding the Fourth Proportional to 78,862.80, 118,294.20 and 23,458.80

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Solution

The fourth proportional to 78,862.80, 118,294.20 and 23,458.80 is: 35,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,862.80 : 118,294.20 = 23,458.80 : x
  2. Step 2: Convert to fraction form
    78,862.80/118,294.20 = 23,458.80/x
  3. Step 3: Cross multiply
    78,862.80x = 118,294.20 × 23,458.80
  4. Step 4: Simplify right side
    78,862.80x = 2,775,039,978.96
  5. Step 5: Solve for x
    x = 2,775,039,978.96/78,862.80
  6. Step 6: Final answer
    x = 35,188.20

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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.