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Finding the Fourth Proportional to 66,871.32, 92,281.08 and 36,656.68

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Solution

The fourth proportional to 66,871.32, 92,281.08 and 36,656.68 is: 50,585.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,871.32 : 92,281.08 = 36,656.68 : x
  2. Step 2: Convert to fraction form
    66,871.32/92,281.08 = 36,656.68/x
  3. Step 3: Cross multiply
    66,871.32x = 92,281.08 × 36,656.68
  4. Step 4: Simplify right side
    66,871.32x = 3,382,718,019.61
  5. Step 5: Solve for x
    x = 3,382,718,019.61/66,871.32
  6. Step 6: Final answer
    x = 50,585.48

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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.