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Finding the Fourth Proportional to 89,622.89, 123,683.12 and 49,340.40

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Solution

The fourth proportional to 89,622.89, 123,683.12 and 49,340.40 is: 68,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,622.89 : 123,683.12 = 49,340.40 : x
  2. Step 2: Convert to fraction form
    89,622.89/123,683.12 = 49,340.40/x
  3. Step 3: Cross multiply
    89,622.89x = 123,683.12 × 49,340.40
  4. Step 4: Simplify right side
    89,622.89x = 6,102,574,614.05
  5. Step 5: Solve for x
    x = 6,102,574,614.05/89,622.89
  6. Step 6: Final answer
    x = 68,091.70

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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.