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Finding the Fourth Proportional to 78,873.40, 118,310.10 and 49,348.90

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Solution

The fourth proportional to 78,873.40, 118,310.10 and 49,348.90 is: 74,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,873.40 : 118,310.10 = 49,348.90 : x
  2. Step 2: Convert to fraction form
    78,873.40/118,310.10 = 49,348.90/x
  3. Step 3: Cross multiply
    78,873.40x = 118,310.10 × 49,348.90
  4. Step 4: Simplify right side
    78,873.40x = 5,838,473,293.89
  5. Step 5: Solve for x
    x = 5,838,473,293.89/78,873.40
  6. Step 6: Final answer
    x = 74,023.35

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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.