Home / 80,937,076.80-121,405,615.20-72,434,020.80

Finding the Fourth Proportional to 80,937,076.80, 121,405,615.20 and 72,434,020.80

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Solution

The fourth proportional to 80,937,076.80, 121,405,615.20 and 72,434,020.80 is: 108,651,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937,076.80 : 121,405,615.20 = 72,434,020.80 : x
  2. Step 2: Convert to fraction form
    80,937,076.80/121,405,615.20 = 72,434,020.80/x
  3. Step 3: Cross multiply
    80,937,076.80x = 121,405,615.20 × 72,434,020.80
  4. Step 4: Simplify right side
    80,937,076.80x = 8,793,896,856,633,596
  5. Step 5: Solve for x
    x = 8,793,896,856,633,596/80,937,076.80
  6. Step 6: Final answer
    x = 108,651,031.20

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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.