Home / 87,081,405.78-120,172,304.70-47,923,182.39

Finding the Fourth Proportional to 87,081,405.78, 120,172,304.70 and 47,923,182.39

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Solution

The fourth proportional to 87,081,405.78, 120,172,304.70 and 47,923,182.39 is: 66,133,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,081,405.78 : 120,172,304.70 = 47,923,182.39 : x
  2. Step 2: Convert to fraction form
    87,081,405.78/120,172,304.70 = 47,923,182.39/x
  3. Step 3: Cross multiply
    87,081,405.78x = 120,172,304.70 × 47,923,182.39
  4. Step 4: Simplify right side
    87,081,405.78x = 5,759,039,276,364,754
  5. Step 5: Solve for x
    x = 5,759,039,276,364,754/87,081,405.78
  6. Step 6: Final answer
    x = 66,133,972.28

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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.