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Finding the Fourth Proportional to 72,694.80, 109,042.20 and 48,070.80

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Solution

The fourth proportional to 72,694.80, 109,042.20 and 48,070.80 is: 72,106.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,694.80 : 109,042.20 = 48,070.80 : x
  2. Step 2: Convert to fraction form
    72,694.80/109,042.20 = 48,070.80/x
  3. Step 3: Cross multiply
    72,694.80x = 109,042.20 × 48,070.80
  4. Step 4: Simplify right side
    72,694.80x = 5,241,745,787.76
  5. Step 5: Solve for x
    x = 5,241,745,787.76/72,694.80
  6. Step 6: Final answer
    x = 72,106.20

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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.