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Finding the Fourth Proportional to 66,478.42, 91,741.95 and 36,264.25

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Solution

The fourth proportional to 66,478.42, 91,741.95 and 36,264.25 is: 50,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478.42 : 91,741.95 = 36,264.25 : x
  2. Step 2: Convert to fraction form
    66,478.42/91,741.95 = 36,264.25/x
  3. Step 3: Cross multiply
    66,478.42x = 91,741.95 × 36,264.25
  4. Step 4: Simplify right side
    66,478.42x = 3,326,952,828.97
  5. Step 5: Solve for x
    x = 3,326,952,828.97/66,478.42
  6. Step 6: Final answer
    x = 50,045.61

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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.