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Finding the Fourth Proportional to 66,341.70, 99,512.55 and 63,279.90

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Solution

The fourth proportional to 66,341.70, 99,512.55 and 63,279.90 is: 94,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,341.70 : 99,512.55 = 63,279.90 : x
  2. Step 2: Convert to fraction form
    66,341.70/99,512.55 = 63,279.90/x
  3. Step 3: Cross multiply
    66,341.70x = 99,512.55 × 63,279.90
  4. Step 4: Simplify right side
    66,341.70x = 6,297,144,212.75
  5. Step 5: Solve for x
    x = 6,297,144,212.75/66,341.70
  6. Step 6: Final answer
    x = 94,919.85

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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.