Home / 87,717.40-121,063.65-57,590.10

Finding the Fourth Proportional to 87,717.40, 121,063.65 and 57,590.10

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Solution

The fourth proportional to 87,717.40, 121,063.65 and 57,590.10 is: 79,483.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,717.40 : 121,063.65 = 57,590.10 : x
  2. Step 2: Convert to fraction form
    87,717.40/121,063.65 = 57,590.10/x
  3. Step 3: Cross multiply
    87,717.40x = 121,063.65 × 57,590.10
  4. Step 4: Simplify right side
    87,717.40x = 6,972,067,709.87
  5. Step 5: Solve for x
    x = 6,972,067,709.87/87,717.40
  6. Step 6: Final answer
    x = 79,483.29

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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.