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Finding the Fourth Proportional to 90,048.61, 124,260.90 and 49,762

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Solution

The fourth proportional to 90,048.61, 124,260.90 and 49,762 is: 68,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,048.61 : 124,260.90 = 49,762 : x
  2. Step 2: Convert to fraction form
    90,048.61/124,260.90 = 49,762/x
  3. Step 3: Cross multiply
    90,048.61x = 124,260.90 × 49,762
  4. Step 4: Simplify right side
    90,048.61x = 6,183,470,905.80
  5. Step 5: Solve for x
    x = 6,183,470,905.80/90,048.61
  6. Step 6: Final answer
    x = 68,668.14

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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.