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Finding the Fourth Proportional to 66,252.68, 91,452.44 and 39,395.11

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Solution

The fourth proportional to 66,252.68, 91,452.44 and 39,395.11 is: 54,379.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,252.68 : 91,452.44 = 39,395.11 : x
  2. Step 2: Convert to fraction form
    66,252.68/91,452.44 = 39,395.11/x
  3. Step 3: Cross multiply
    66,252.68x = 91,452.44 × 39,395.11
  4. Step 4: Simplify right side
    66,252.68x = 3,602,778,974.90
  5. Step 5: Solve for x
    x = 3,602,778,974.90/66,252.68
  6. Step 6: Final answer
    x = 54,379.37

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1.5x scale

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.