Home / 87,680,138.40-131,628,034.80-55,331,978.40

Finding the Fourth Proportional to 87,680,138.40, 131,628,034.80 and 55,331,978.40

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Solution

The fourth proportional to 87,680,138.40, 131,628,034.80 and 55,331,978.40 is: 83,066,013.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680,138.40 : 131,628,034.80 = 55,331,978.40 : x
  2. Step 2: Convert to fraction form
    87,680,138.40/131,628,034.80 = 55,331,978.40/x
  3. Step 3: Cross multiply
    87,680,138.40x = 131,628,034.80 × 55,331,978.40
  4. Step 4: Simplify right side
    87,680,138.40x = 7,283,239,578,388,048
  5. Step 5: Solve for x
    x = 7,283,239,578,388,048/87,680,138.40
  6. Step 6: Final answer
    x = 83,066,013.71

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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.