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Finding the Fourth Proportional to 72,609,680.80, 108,914,521.20 and 26,551,460.80

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Solution

The fourth proportional to 72,609,680.80, 108,914,521.20 and 26,551,460.80 is: 39,827,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609,680.80 : 108,914,521.20 = 26,551,460.80 : x
  2. Step 2: Convert to fraction form
    72,609,680.80/108,914,521.20 = 26,551,460.80/x
  3. Step 3: Cross multiply
    72,609,680.80x = 108,914,521.20 × 26,551,460.80
  4. Step 4: Simplify right side
    72,609,680.80x = 2,891,839,640,192,569
  5. Step 5: Solve for x
    x = 2,891,839,640,192,569/72,609,680.80
  6. Step 6: Final answer
    x = 39,827,191.20

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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.