Home / 87,824.78-121,200.55-53,357.78

Finding the Fourth Proportional to 87,824.78, 121,200.55 and 53,357.78

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Solution

The fourth proportional to 87,824.78, 121,200.55 and 53,357.78 is: 73,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,824.78 : 121,200.55 = 53,357.78 : x
  2. Step 2: Convert to fraction form
    87,824.78/121,200.55 = 53,357.78/x
  3. Step 3: Cross multiply
    87,824.78x = 121,200.55 × 53,357.78
  4. Step 4: Simplify right side
    87,824.78x = 6,466,991,676.78
  5. Step 5: Solve for x
    x = 6,466,991,676.78/87,824.78
  6. Step 6: Final answer
    x = 73,635.16

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1.5x scale

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.