Home / 90,861,280.80-136,291,921.20-55,029,472.80

Finding the Fourth Proportional to 90,861,280.80, 136,291,921.20 and 55,029,472.80

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Solution

The fourth proportional to 90,861,280.80, 136,291,921.20 and 55,029,472.80 is: 82,544,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,861,280.80 : 136,291,921.20 = 55,029,472.80 : x
  2. Step 2: Convert to fraction form
    90,861,280.80/136,291,921.20 = 55,029,472.80/x
  3. Step 3: Cross multiply
    90,861,280.80x = 136,291,921.20 × 55,029,472.80
  4. Step 4: Simplify right side
    90,861,280.80x = 7,500,072,570,535,142
  5. Step 5: Solve for x
    x = 7,500,072,570,535,142/90,861,280.80
  6. Step 6: Final answer
    x = 82,544,209.20

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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.