Home / 88,391.32-121,980.60-48,105.36

Finding the Fourth Proportional to 88,391.32, 121,980.60 and 48,105.36

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Solution

The fourth proportional to 88,391.32, 121,980.60 and 48,105.36 is: 66,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,391.32 : 121,980.60 = 48,105.36 : x
  2. Step 2: Convert to fraction form
    88,391.32/121,980.60 = 48,105.36/x
  3. Step 3: Cross multiply
    88,391.32x = 121,980.60 × 48,105.36
  4. Step 4: Simplify right side
    88,391.32x = 5,867,920,676.02
  5. Step 5: Solve for x
    x = 5,867,920,676.02/88,391.32
  6. Step 6: Final answer
    x = 66,385.71

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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.