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Finding the Fourth Proportional to 66,646.48, 91,876.84 and 41,135.76

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Solution

The fourth proportional to 66,646.48, 91,876.84 and 41,135.76 is: 56,708.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,646.48 : 91,876.84 = 41,135.76 : x
  2. Step 2: Convert to fraction form
    66,646.48/91,876.84 = 41,135.76/x
  3. Step 3: Cross multiply
    66,646.48x = 91,876.84 × 41,135.76
  4. Step 4: Simplify right side
    66,646.48x = 3,779,423,639.80
  5. Step 5: Solve for x
    x = 3,779,423,639.80/66,646.48
  6. Step 6: Final answer
    x = 56,708.53

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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.