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Finding the Fourth Proportional to 90,231.67, 124,516.52 and 49,945.51

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Solution

The fourth proportional to 90,231.67, 124,516.52 and 49,945.51 is: 68,923.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,231.67 : 124,516.52 = 49,945.51 : x
  2. Step 2: Convert to fraction form
    90,231.67/124,516.52 = 49,945.51/x
  3. Step 3: Cross multiply
    90,231.67x = 124,516.52 × 49,945.51
  4. Step 4: Simplify right side
    90,231.67x = 6,219,041,094.83
  5. Step 5: Solve for x
    x = 6,219,041,094.83/90,231.67
  6. Step 6: Final answer
    x = 68,923.04

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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.