Home / 87,774.68-121,129.62-53,783.24

Finding the Fourth Proportional to 87,774.68, 121,129.62 and 53,783.24

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Solution

The fourth proportional to 87,774.68, 121,129.62 and 53,783.24 is: 74,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,774.68 : 121,129.62 = 53,783.24 : x
  2. Step 2: Convert to fraction form
    87,774.68/121,129.62 = 53,783.24/x
  3. Step 3: Cross multiply
    87,774.68x = 121,129.62 × 53,783.24
  4. Step 4: Simplify right side
    87,774.68x = 6,514,743,423.57
  5. Step 5: Solve for x
    x = 6,514,743,423.57/87,774.68
  6. Step 6: Final answer
    x = 74,221.22

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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.