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Finding the Fourth Proportional to 66,537.90, 99,806.85 and 59,976.90

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Solution

The fourth proportional to 66,537.90, 99,806.85 and 59,976.90 is: 89,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,537.90 : 99,806.85 = 59,976.90 : x
  2. Step 2: Convert to fraction form
    66,537.90/99,806.85 = 59,976.90/x
  3. Step 3: Cross multiply
    66,537.90x = 99,806.85 × 59,976.90
  4. Step 4: Simplify right side
    66,537.90x = 5,986,105,461.77
  5. Step 5: Solve for x
    x = 5,986,105,461.77/66,537.90
  6. Step 6: Final answer
    x = 89,965.35

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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.