Home / 78,380,007.76-108,177,777.12-45,360,360.64

Finding the Fourth Proportional to 78,380,007.76, 108,177,777.12 and 45,360,360.64

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Solution

The fourth proportional to 78,380,007.76, 108,177,777.12 and 45,360,360.64 is: 62,605,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,380,007.76 : 108,177,777.12 = 45,360,360.64 : x
  2. Step 2: Convert to fraction form
    78,380,007.76/108,177,777.12 = 45,360,360.64/x
  3. Step 3: Cross multiply
    78,380,007.76x = 108,177,777.12 × 45,360,360.64
  4. Step 4: Simplify right side
    78,380,007.76x = 4,906,982,983,396,741
  5. Step 5: Solve for x
    x = 4,906,982,983,396,741/78,380,007.76
  6. Step 6: Final answer
    x = 62,605,033.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.