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Finding the Fourth Proportional to 72,428,449.80, 108,642,674.70 and 23,913,791.40

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Solution

The fourth proportional to 72,428,449.80, 108,642,674.70 and 23,913,791.40 is: 35,870,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,428,449.80 : 108,642,674.70 = 23,913,791.40 : x
  2. Step 2: Convert to fraction form
    72,428,449.80/108,642,674.70 = 23,913,791.40/x
  3. Step 3: Cross multiply
    72,428,449.80x = 108,642,674.70 × 23,913,791.40
  4. Step 4: Simplify right side
    72,428,449.80x = 2,598,058,259,913,857.50
  5. Step 5: Solve for x
    x = 2,598,058,259,913,857.50/72,428,449.80
  6. Step 6: Final answer
    x = 35,870,687.10

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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.