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Finding the Fourth Proportional to 89,290.77, 123,220.89 and 49,005.19

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Solution

The fourth proportional to 89,290.77, 123,220.89 and 49,005.19 is: 67,626.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,290.77 : 123,220.89 = 49,005.19 : x
  2. Step 2: Convert to fraction form
    89,290.77/123,220.89 = 49,005.19/x
  3. Step 3: Cross multiply
    89,290.77x = 123,220.89 × 49,005.19
  4. Step 4: Simplify right side
    89,290.77x = 6,038,463,126.42
  5. Step 5: Solve for x
    x = 6,038,463,126.42/89,290.77
  6. Step 6: Final answer
    x = 67,626.96

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Double scale
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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.