Home / 78,278,644.85-117,366,139.41-37,344,401.82

Finding the Fourth Proportional to 78,278,644.85, 117,366,139.41 and 37,344,401.82

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Solution

The fourth proportional to 78,278,644.85, 117,366,139.41 and 37,344,401.82 is: 55,991,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278,644.85 : 117,366,139.41 = 37,344,401.82 : x
  2. Step 2: Convert to fraction form
    78,278,644.85/117,366,139.41 = 37,344,401.82/x
  3. Step 3: Cross multiply
    78,278,644.85x = 117,366,139.41 × 37,344,401.82
  4. Step 4: Simplify right side
    78,278,644.85x = 4,382,968,270,189,177.50
  5. Step 5: Solve for x
    x = 4,382,968,270,189,177.50/78,278,644.85
  6. Step 6: Final answer
    x = 55,991,877.20

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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.