Home / 87,821.52-121,196.64-53,823.45

Finding the Fourth Proportional to 87,821.52, 121,196.64 and 53,823.45

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Solution

The fourth proportional to 87,821.52, 121,196.64 and 53,823.45 is: 74,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.52 : 121,196.64 = 53,823.45 : x
  2. Step 2: Convert to fraction form
    87,821.52/121,196.64 = 53,823.45/x
  3. Step 3: Cross multiply
    87,821.52x = 121,196.64 × 53,823.45
  4. Step 4: Simplify right side
    87,821.52x = 6,523,221,293.21
  5. Step 5: Solve for x
    x = 6,523,221,293.21/87,821.52
  6. Step 6: Final answer
    x = 74,278.16

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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.