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Finding the Fourth Proportional to 90,279.62, 124,584.32 and 49,992.51

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Solution

The fourth proportional to 90,279.62, 124,584.32 and 49,992.51 is: 68,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,279.62 : 124,584.32 = 49,992.51 : x
  2. Step 2: Convert to fraction form
    90,279.62/124,584.32 = 49,992.51/x
  3. Step 3: Cross multiply
    90,279.62x = 124,584.32 × 49,992.51
  4. Step 4: Simplify right side
    90,279.62x = 6,228,282,988.42
  5. Step 5: Solve for x
    x = 6,228,282,988.42/90,279.62
  6. Step 6: Final answer
    x = 68,988.81

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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.