Home / 83,648,981.20-125,473,471.80-66,430,292.80

Finding the Fourth Proportional to 83,648,981.20, 125,473,471.80 and 66,430,292.80

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Solution

The fourth proportional to 83,648,981.20, 125,473,471.80 and 66,430,292.80 is: 99,645,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,648,981.20 : 125,473,471.80 = 66,430,292.80 : x
  2. Step 2: Convert to fraction form
    83,648,981.20/125,473,471.80 = 66,430,292.80/x
  3. Step 3: Cross multiply
    83,648,981.20x = 125,473,471.80 × 66,430,292.80
  4. Step 4: Simplify right side
    83,648,981.20x = 8,335,239,470,306,542
  5. Step 5: Solve for x
    x = 8,335,239,470,306,542/83,648,981.20
  6. Step 6: Final answer
    x = 99,645,439.20

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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.