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Finding the Fourth Proportional to 66,339, 91,547.82 and 36,531

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Solution

The fourth proportional to 66,339, 91,547.82 and 36,531 is: 50,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339 : 91,547.82 = 36,531 : x
  2. Step 2: Convert to fraction form
    66,339/91,547.82 = 36,531/x
  3. Step 3: Cross multiply
    66,339x = 91,547.82 × 36,531
  4. Step 4: Simplify right side
    66,339x = 3,344,333,412.42
  5. Step 5: Solve for x
    x = 3,344,333,412.42/66,339
  6. Step 6: Final answer
    x = 50,412.78

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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.