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Finding the Fourth Proportional to 89,601.89, 134,485.85 and 45,259.72

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Solution

The fourth proportional to 89,601.89, 134,485.85 and 45,259.72 is: 67,931.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,601.89 : 134,485.85 = 45,259.72 : x
  2. Step 2: Convert to fraction form
    89,601.89/134,485.85 = 45,259.72/x
  3. Step 3: Cross multiply
    89,601.89x = 134,485.85 × 45,259.72
  4. Step 4: Simplify right side
    89,601.89x = 6,086,791,691.90
  5. Step 5: Solve for x
    x = 6,086,791,691.90/89,601.89
  6. Step 6: Final answer
    x = 67,931.51

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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.