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Finding the Fourth Proportional to 72,577,600.80, 108,866,401.20 and 54,661,696.80

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Solution

The fourth proportional to 72,577,600.80, 108,866,401.20 and 54,661,696.80 is: 81,992,545.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,577,600.80 : 108,866,401.20 = 54,661,696.80 : x
  2. Step 2: Convert to fraction form
    72,577,600.80/108,866,401.20 = 54,661,696.80/x
  3. Step 3: Cross multiply
    72,577,600.80x = 108,866,401.20 × 54,661,696.80
  4. Step 4: Simplify right side
    72,577,600.80x = 5,950,822,214,101,556
  5. Step 5: Solve for x
    x = 5,950,822,214,101,556/72,577,600.80
  6. Step 6: Final answer
    x = 81,992,545.20

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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.