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Finding the Fourth Proportional to 90,202.59, 124,479.93 and 54,394.11

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Solution

The fourth proportional to 90,202.59, 124,479.93 and 54,394.11 is: 75,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,202.59 : 124,479.93 = 54,394.11 : x
  2. Step 2: Convert to fraction form
    90,202.59/124,479.93 = 54,394.11/x
  3. Step 3: Cross multiply
    90,202.59x = 124,479.93 × 54,394.11
  4. Step 4: Simplify right side
    90,202.59x = 6,770,975,005.21
  5. Step 5: Solve for x
    x = 6,770,975,005.21/90,202.59
  6. Step 6: Final answer
    x = 75,064.09

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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.