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Finding the Fourth Proportional to 90,210.87, 124,490.23 and 49,923.61

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Solution

The fourth proportional to 90,210.87, 124,490.23 and 49,923.61 is: 68,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,210.87 : 124,490.23 = 49,923.61 : x
  2. Step 2: Convert to fraction form
    90,210.87/124,490.23 = 49,923.61/x
  3. Step 3: Cross multiply
    90,210.87x = 124,490.23 × 49,923.61
  4. Step 4: Simplify right side
    90,210.87x = 6,215,001,255.30
  5. Step 5: Solve for x
    x = 6,215,001,255.30/90,210.87
  6. Step 6: Final answer
    x = 68,894.15

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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.