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Finding the Fourth Proportional to 66,894.80, 92,317.61 and 36,681.28

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Solution

The fourth proportional to 66,894.80, 92,317.61 and 36,681.28 is: 50,621.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,894.80 : 92,317.61 = 36,681.28 : x
  2. Step 2: Convert to fraction form
    66,894.80/92,317.61 = 36,681.28/x
  3. Step 3: Cross multiply
    66,894.80x = 92,317.61 × 36,681.28
  4. Step 4: Simplify right side
    66,894.80x = 3,386,327,456.35
  5. Step 5: Solve for x
    x = 3,386,327,456.35/66,894.80
  6. Step 6: Final answer
    x = 50,621.69

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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.