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Finding the Fourth Proportional to 90,112.96, 124,347.13 and 49,821.22

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Solution

The fourth proportional to 90,112.96, 124,347.13 and 49,821.22 is: 68,748.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,112.96 : 124,347.13 = 49,821.22 : x
  2. Step 2: Convert to fraction form
    90,112.96/124,347.13 = 49,821.22/x
  3. Step 3: Cross multiply
    90,112.96x = 124,347.13 × 49,821.22
  4. Step 4: Simplify right side
    90,112.96x = 6,195,125,720.10
  5. Step 5: Solve for x
    x = 6,195,125,720.10/90,112.96
  6. Step 6: Final answer
    x = 68,748.44

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1.5x scale

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.