Home / 78,282,945.76-108,024,165.06-45,245,334.72

Finding the Fourth Proportional to 78,282,945.76, 108,024,165.06 and 45,245,334.72

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Solution

The fourth proportional to 78,282,945.76, 108,024,165.06 and 45,245,334.72 is: 62,434,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282,945.76 : 108,024,165.06 = 45,245,334.72 : x
  2. Step 2: Convert to fraction form
    78,282,945.76/108,024,165.06 = 45,245,334.72/x
  3. Step 3: Cross multiply
    78,282,945.76x = 108,024,165.06 × 45,245,334.72
  4. Step 4: Simplify right side
    78,282,945.76x = 4,887,589,505,988,229
  5. Step 5: Solve for x
    x = 4,887,589,505,988,229/78,282,945.76
  6. Step 6: Final answer
    x = 62,434,920.64

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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.