Home / 77,231,489.20-115,847,233.80-40,825,812.40

Finding the Fourth Proportional to 77,231,489.20, 115,847,233.80 and 40,825,812.40

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Solution

The fourth proportional to 77,231,489.20, 115,847,233.80 and 40,825,812.40 is: 61,238,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,231,489.20 : 115,847,233.80 = 40,825,812.40 : x
  2. Step 2: Convert to fraction form
    77,231,489.20/115,847,233.80 = 40,825,812.40/x
  3. Step 3: Cross multiply
    77,231,489.20x = 115,847,233.80 × 40,825,812.40
  4. Step 4: Simplify right side
    77,231,489.20x = 4,729,557,434,177,739
  5. Step 5: Solve for x
    x = 4,729,557,434,177,739/77,231,489.20
  6. Step 6: Final answer
    x = 61,238,718.60

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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.