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Finding the Fourth Proportional to 66,866.40, 92,271.72 and 36,645.72

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Solution

The fourth proportional to 66,866.40, 92,271.72 and 36,645.72 is: 50,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,866.40 : 92,271.72 = 36,645.72 : x
  2. Step 2: Convert to fraction form
    66,866.40/92,271.72 = 36,645.72/x
  3. Step 3: Cross multiply
    66,866.40x = 92,271.72 × 36,645.72
  4. Step 4: Simplify right side
    66,866.40x = 3,381,363,615.04
  5. Step 5: Solve for x
    x = 3,381,363,615.04/66,866.40
  6. Step 6: Final answer
    x = 50,568.95

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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.