Home / 88,403.87-121,999.98-54,431.96

Finding the Fourth Proportional to 88,403.87, 121,999.98 and 54,431.96

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Solution

The fourth proportional to 88,403.87, 121,999.98 and 54,431.96 is: 75,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,403.87 : 121,999.98 = 54,431.96 : x
  2. Step 2: Convert to fraction form
    88,403.87/121,999.98 = 54,431.96/x
  3. Step 3: Cross multiply
    88,403.87x = 121,999.98 × 54,431.96
  4. Step 4: Simplify right side
    88,403.87x = 6,640,697,149.20
  5. Step 5: Solve for x
    x = 6,640,697,149.20/88,403.87
  6. Step 6: Final answer
    x = 75,117.72

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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.