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Finding the Fourth Proportional to 66,565.80, 91,855.62 and 38,266.02

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Solution

The fourth proportional to 66,565.80, 91,855.62 and 38,266.02 is: 52,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,565.80 : 91,855.62 = 38,266.02 : x
  2. Step 2: Convert to fraction form
    66,565.80/91,855.62 = 38,266.02/x
  3. Step 3: Cross multiply
    66,565.80x = 91,855.62 × 38,266.02
  4. Step 4: Simplify right side
    66,565.80x = 3,514,948,992.03
  5. Step 5: Solve for x
    x = 3,514,948,992.03/66,565.80
  6. Step 6: Final answer
    x = 52,804.13

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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.