Home / 78,834,901.12-108,002,007.24-75,887,475.76

Finding the Fourth Proportional to 78,834,901.12, 108,002,007.24 and 75,887,475.76

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Solution

The fourth proportional to 78,834,901.12, 108,002,007.24 and 75,887,475.76 is: 103,964,102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834,901.12 : 108,002,007.24 = 75,887,475.76 : x
  2. Step 2: Convert to fraction form
    78,834,901.12/108,002,007.24 = 75,887,475.76/x
  3. Step 3: Cross multiply
    78,834,901.12x = 108,002,007.24 × 75,887,475.76
  4. Step 4: Simplify right side
    78,834,901.12x = 8,195,999,706,456,845
  5. Step 5: Solve for x
    x = 8,195,999,706,456,845/78,834,901.12
  6. Step 6: Final answer
    x = 103,964,102.07

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.