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Finding the Fourth Proportional to 66,272.68, 91,458.68 and 37,983.76

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Solution

The fourth proportional to 66,272.68, 91,458.68 and 37,983.76 is: 52,418.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,272.68 : 91,458.68 = 37,983.76 : x
  2. Step 2: Convert to fraction form
    66,272.68/91,458.68 = 37,983.76/x
  3. Step 3: Cross multiply
    66,272.68x = 91,458.68 × 37,983.76
  4. Step 4: Simplify right side
    66,272.68x = 3,473,944,551.04
  5. Step 5: Solve for x
    x = 3,473,944,551.04/66,272.68
  6. Step 6: Final answer
    x = 52,418.95

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1.5x scale

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.