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Finding the Fourth Proportional to 48,486, 66,911.76 and 29,633.52

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Solution

The fourth proportional to 48,486, 66,911.76 and 29,633.52 is: 40,894.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,486 : 66,911.76 = 29,633.52 : x
  2. Step 2: Convert to fraction form
    48,486/66,911.76 = 29,633.52/x
  3. Step 3: Cross multiply
    48,486x = 66,911.76 × 29,633.52
  4. Step 4: Simplify right side
    48,486x = 1,982,830,978.20
  5. Step 5: Solve for x
    x = 1,982,830,978.20/48,486
  6. Step 6: Final answer
    x = 40,894.92

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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.