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Finding the Fourth Proportional to 90,371.88, 124,714.08 and 50,086.53

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Solution

The fourth proportional to 90,371.88, 124,714.08 and 50,086.53 is: 69,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,371.88 : 124,714.08 = 50,086.53 : x
  2. Step 2: Convert to fraction form
    90,371.88/124,714.08 = 50,086.53/x
  3. Step 3: Cross multiply
    90,371.88x = 124,714.08 × 50,086.53
  4. Step 4: Simplify right side
    90,371.88x = 6,246,495,509.34
  5. Step 5: Solve for x
    x = 6,246,495,509.34/90,371.88
  6. Step 6: Final answer
    x = 69,119.90

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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.