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Finding the Fourth Proportional to 78,733.80, 118,100.70 and 32,020.20

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Solution

The fourth proportional to 78,733.80, 118,100.70 and 32,020.20 is: 48,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.80 : 118,100.70 = 32,020.20 : x
  2. Step 2: Convert to fraction form
    78,733.80/118,100.70 = 32,020.20/x
  3. Step 3: Cross multiply
    78,733.80x = 118,100.70 × 32,020.20
  4. Step 4: Simplify right side
    78,733.80x = 3,781,608,034.14
  5. Step 5: Solve for x
    x = 3,781,608,034.14/78,733.80
  6. Step 6: Final answer
    x = 48,030.30

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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.