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Finding the Fourth Proportional to 66,489.65, 91,834.85 and 48,555.89

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Solution

The fourth proportional to 66,489.65, 91,834.85 and 48,555.89 is: 67,064.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,489.65 : 91,834.85 = 48,555.89 : x
  2. Step 2: Convert to fraction form
    66,489.65/91,834.85 = 48,555.89/x
  3. Step 3: Cross multiply
    66,489.65x = 91,834.85 × 48,555.89
  4. Step 4: Simplify right side
    66,489.65x = 4,459,122,536.98
  5. Step 5: Solve for x
    x = 4,459,122,536.98/66,489.65
  6. Step 6: Final answer
    x = 67,064.92

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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.