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Finding the Fourth Proportional to 90,101.91, 124,338.69 and 49,817.37

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Solution

The fourth proportional to 90,101.91, 124,338.69 and 49,817.37 is: 68,746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,101.91 : 124,338.69 = 49,817.37 : x
  2. Step 2: Convert to fraction form
    90,101.91/124,338.69 = 49,817.37/x
  3. Step 3: Cross multiply
    90,101.91x = 124,338.69 × 49,817.37
  4. Step 4: Simplify right side
    90,101.91x = 6,194,226,525.05
  5. Step 5: Solve for x
    x = 6,194,226,525.05/90,101.91
  6. Step 6: Final answer
    x = 68,746.89

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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.