Home / 90,209.81-124,487.66-49,921.16

Finding the Fourth Proportional to 90,209.81, 124,487.66 and 49,921.16

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Solution

The fourth proportional to 90,209.81, 124,487.66 and 49,921.16 is: 68,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,209.81 : 124,487.66 = 49,921.16 : x
  2. Step 2: Convert to fraction form
    90,209.81/124,487.66 = 49,921.16/x
  3. Step 3: Cross multiply
    90,209.81x = 124,487.66 × 49,921.16
  4. Step 4: Simplify right side
    90,209.81x = 6,214,567,520.84
  5. Step 5: Solve for x
    x = 6,214,567,520.84/90,209.81
  6. Step 6: Final answer
    x = 68,890.16

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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.