Home / 89,729.20-134,334.60-54,737.20

Finding the Fourth Proportional to 89,729.20, 134,334.60 and 54,737.20

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Solution

The fourth proportional to 89,729.20, 134,334.60 and 54,737.20 is: 81,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,729.20 : 134,334.60 = 54,737.20 : x
  2. Step 2: Convert to fraction form
    89,729.20/134,334.60 = 54,737.20/x
  3. Step 3: Cross multiply
    89,729.20x = 134,334.60 × 54,737.20
  4. Step 4: Simplify right side
    89,729.20x = 7,353,099,867.12
  5. Step 5: Solve for x
    x = 7,353,099,867.12/89,729.20
  6. Step 6: Final answer
    x = 81,947.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.