Home / 88,170.64-121,686.60-54,641.68

Finding the Fourth Proportional to 88,170.64, 121,686.60 and 54,641.68

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Solution

The fourth proportional to 88,170.64, 121,686.60 and 54,641.68 is: 75,412.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,170.64 : 121,686.60 = 54,641.68 : x
  2. Step 2: Convert to fraction form
    88,170.64/121,686.60 = 54,641.68/x
  3. Step 3: Cross multiply
    88,170.64x = 121,686.60 × 54,641.68
  4. Step 4: Simplify right side
    88,170.64x = 6,649,160,257.49
  5. Step 5: Solve for x
    x = 6,649,160,257.49/88,170.64
  6. Step 6: Final answer
    x = 75,412.41

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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.