Home / 78,278,639.91-117,366,132.02-37,344,396.89

Finding the Fourth Proportional to 78,278,639.91, 117,366,132.02 and 37,344,396.89

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Solution

The fourth proportional to 78,278,639.91, 117,366,132.02 and 37,344,396.89 is: 55,991,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278,639.91 : 117,366,132.02 = 37,344,396.89 : x
  2. Step 2: Convert to fraction form
    78,278,639.91/117,366,132.02 = 37,344,396.89/x
  3. Step 3: Cross multiply
    78,278,639.91x = 117,366,132.02 × 37,344,396.89
  4. Step 4: Simplify right side
    78,278,639.91x = 4,382,967,414,825,464.50
  5. Step 5: Solve for x
    x = 4,382,967,414,825,464.50/78,278,639.91
  6. Step 6: Final answer
    x = 55,991,869.81

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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.