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Finding the Fourth Proportional to 90,235.57, 124,523.57 and 49,948.47

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Solution

The fourth proportional to 90,235.57, 124,523.57 and 49,948.47 is: 68,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,235.57 : 124,523.57 = 49,948.47 : x
  2. Step 2: Convert to fraction form
    90,235.57/124,523.57 = 49,948.47/x
  3. Step 3: Cross multiply
    90,235.57x = 124,523.57 × 49,948.47
  4. Step 4: Simplify right side
    90,235.57x = 6,219,761,800.44
  5. Step 5: Solve for x
    x = 6,219,761,800.44/90,235.57
  6. Step 6: Final answer
    x = 68,928.05

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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.