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Finding the Fourth Proportional to 66,392.52, 91,624.14 and 40,893.72

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Solution

The fourth proportional to 66,392.52, 91,624.14 and 40,893.72 is: 56,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,392.52 : 91,624.14 = 40,893.72 : x
  2. Step 2: Convert to fraction form
    66,392.52/91,624.14 = 40,893.72/x
  3. Step 3: Cross multiply
    66,392.52x = 91,624.14 × 40,893.72
  4. Step 4: Simplify right side
    66,392.52x = 3,746,851,926.40
  5. Step 5: Solve for x
    x = 3,746,851,926.40/66,392.52
  6. Step 6: Final answer
    x = 56,434.85

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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.