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Finding the Fourth Proportional to 66,106.40, 91,227.93 and 35,891.72

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Solution

The fourth proportional to 66,106.40, 91,227.93 and 35,891.72 is: 49,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,106.40 : 91,227.93 = 35,891.72 : x
  2. Step 2: Convert to fraction form
    66,106.40/91,227.93 = 35,891.72/x
  3. Step 3: Cross multiply
    66,106.40x = 91,227.93 × 35,891.72
  4. Step 4: Simplify right side
    66,106.40x = 3,274,327,319.74
  5. Step 5: Solve for x
    x = 3,274,327,319.74/66,106.40
  6. Step 6: Final answer
    x = 49,531.17

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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.