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Finding the Fourth Proportional to 90,407.43, 124,769.62 and 50,133.82

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Solution

The fourth proportional to 90,407.43, 124,769.62 and 50,133.82 is: 69,188.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,407.43 : 124,769.62 = 50,133.82 : x
  2. Step 2: Convert to fraction form
    90,407.43/124,769.62 = 50,133.82/x
  3. Step 3: Cross multiply
    90,407.43x = 124,769.62 × 50,133.82
  4. Step 4: Simplify right side
    90,407.43x = 6,255,177,670.55
  5. Step 5: Solve for x
    x = 6,255,177,670.55/90,407.43
  6. Step 6: Final answer
    x = 69,188.76

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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.