Home / 72,715,405.20-109,073,107.80-68,236,429.20

Finding the Fourth Proportional to 72,715,405.20, 109,073,107.80 and 68,236,429.20

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Solution

The fourth proportional to 72,715,405.20, 109,073,107.80 and 68,236,429.20 is: 102,354,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,715,405.20 : 109,073,107.80 = 68,236,429.20 : x
  2. Step 2: Convert to fraction form
    72,715,405.20/109,073,107.80 = 68,236,429.20/x
  3. Step 3: Cross multiply
    72,715,405.20x = 109,073,107.80 × 68,236,429.20
  4. Step 4: Simplify right side
    72,715,405.20x = 7,442,759,398,018,668
  5. Step 5: Solve for x
    x = 7,442,759,398,018,668/72,715,405.20
  6. Step 6: Final answer
    x = 102,354,643.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.