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Finding the Fourth Proportional to 66,506.77, 99,723.56 and 45,470.57

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Solution

The fourth proportional to 66,506.77, 99,723.56 and 45,470.57 is: 68,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.77 : 99,723.56 = 45,470.57 : x
  2. Step 2: Convert to fraction form
    66,506.77/99,723.56 = 45,470.57/x
  3. Step 3: Cross multiply
    66,506.77x = 99,723.56 × 45,470.57
  4. Step 4: Simplify right side
    66,506.77x = 4,534,486,389.66
  5. Step 5: Solve for x
    x = 4,534,486,389.66/66,506.77
  6. Step 6: Final answer
    x = 68,180.82

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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.