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Finding the Fourth Proportional to 66,645.77, 99,543.03 and 60,310.82

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Solution

The fourth proportional to 66,645.77, 99,543.03 and 60,310.82 is: 90,081.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,645.77 : 99,543.03 = 60,310.82 : x
  2. Step 2: Convert to fraction form
    66,645.77/99,543.03 = 60,310.82/x
  3. Step 3: Cross multiply
    66,645.77x = 99,543.03 × 60,310.82
  4. Step 4: Simplify right side
    66,645.77x = 6,003,522,013.44
  5. Step 5: Solve for x
    x = 6,003,522,013.44/66,645.77
  6. Step 6: Final answer
    x = 90,081.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.