Home / 78,317,061.20-108,071,218.20-45,279,439.80

Finding the Fourth Proportional to 78,317,061.20, 108,071,218.20 and 45,279,439.80

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Solution

The fourth proportional to 78,317,061.20, 108,071,218.20 and 45,279,439.80 is: 62,481,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,317,061.20 : 108,071,218.20 = 45,279,439.80 : x
  2. Step 2: Convert to fraction form
    78,317,061.20/108,071,218.20 = 45,279,439.80/x
  3. Step 3: Cross multiply
    78,317,061.20x = 108,071,218.20 × 45,279,439.80
  4. Step 4: Simplify right side
    78,317,061.20x = 4,893,404,218,109,625
  5. Step 5: Solve for x
    x = 4,893,404,218,109,625/78,317,061.20
  6. Step 6: Final answer
    x = 62,481,969.35

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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.