Home / 78,282,943.75-108,024,162.30-45,245,332.72

Finding the Fourth Proportional to 78,282,943.75, 108,024,162.30 and 45,245,332.72

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Solution

The fourth proportional to 78,282,943.75, 108,024,162.30 and 45,245,332.72 is: 62,434,917.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282,943.75 : 108,024,162.30 = 45,245,332.72 : x
  2. Step 2: Convert to fraction form
    78,282,943.75/108,024,162.30 = 45,245,332.72/x
  3. Step 3: Cross multiply
    78,282,943.75x = 108,024,162.30 × 45,245,332.72
  4. Step 4: Simplify right side
    78,282,943.75x = 4,887,589,165,197,810
  5. Step 5: Solve for x
    x = 4,887,589,165,197,810/78,282,943.75
  6. Step 6: Final answer
    x = 62,434,917.89

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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.