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Finding the Fourth Proportional to 66,865.91, 92,275.07 and 36,650.61

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Solution

The fourth proportional to 66,865.91, 92,275.07 and 36,650.61 is: 50,577.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,865.91 : 92,275.07 = 36,650.61 : x
  2. Step 2: Convert to fraction form
    66,865.91/92,275.07 = 36,650.61/x
  3. Step 3: Cross multiply
    66,865.91x = 92,275.07 × 36,650.61
  4. Step 4: Simplify right side
    66,865.91x = 3,381,937,420.04
  5. Step 5: Solve for x
    x = 3,381,937,420.04/66,865.91
  6. Step 6: Final answer
    x = 50,577.91

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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.