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Finding the Fourth Proportional to 66,569.98, 91,878.44 and 39,344.96

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Solution

The fourth proportional to 66,569.98, 91,878.44 and 39,344.96 is: 54,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,569.98 : 91,878.44 = 39,344.96 : x
  2. Step 2: Convert to fraction form
    66,569.98/91,878.44 = 39,344.96/x
  3. Step 3: Cross multiply
    66,569.98x = 91,878.44 × 39,344.96
  4. Step 4: Simplify right side
    66,569.98x = 3,614,953,546.66
  5. Step 5: Solve for x
    x = 3,614,953,546.66/66,569.98
  6. Step 6: Final answer
    x = 54,303.06

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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.