Home / 87,089.83-130,618.32-33,781.70

Finding the Fourth Proportional to 87,089.83, 130,618.32 and 33,781.70

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Solution

The fourth proportional to 87,089.83, 130,618.32 and 33,781.70 is: 50,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,089.83 : 130,618.32 = 33,781.70 : x
  2. Step 2: Convert to fraction form
    87,089.83/130,618.32 = 33,781.70/x
  3. Step 3: Cross multiply
    87,089.83x = 130,618.32 × 33,781.70
  4. Step 4: Simplify right side
    87,089.83x = 4,412,508,900.74
  5. Step 5: Solve for x
    x = 4,412,508,900.74/87,089.83
  6. Step 6: Final answer
    x = 50,666.18

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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.