Home / 72,780,458.40-108,872,089.20-65,614,096.80

Finding the Fourth Proportional to 72,780,458.40, 108,872,089.20 and 65,614,096.80

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Solution

The fourth proportional to 72,780,458.40, 108,872,089.20 and 65,614,096.80 is: 98,151,948.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,780,458.40 : 108,872,089.20 = 65,614,096.80 : x
  2. Step 2: Convert to fraction form
    72,780,458.40/108,872,089.20 = 65,614,096.80/x
  3. Step 3: Cross multiply
    72,780,458.40x = 108,872,089.20 × 65,614,096.80
  4. Step 4: Simplify right side
    72,780,458.40x = 7,143,543,799,587,034
  5. Step 5: Solve for x
    x = 7,143,543,799,587,034/72,780,458.40
  6. Step 6: Final answer
    x = 98,151,948.43

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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.