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Finding the Fourth Proportional to 90,673.62, 135,871.86 and 38,054.40

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Solution

The fourth proportional to 90,673.62, 135,871.86 and 38,054.40 is: 57,023.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,673.62 : 135,871.86 = 38,054.40 : x
  2. Step 2: Convert to fraction form
    90,673.62/135,871.86 = 38,054.40/x
  3. Step 3: Cross multiply
    90,673.62x = 135,871.86 × 38,054.40
  4. Step 4: Simplify right side
    90,673.62x = 5,170,522,109.18
  5. Step 5: Solve for x
    x = 5,170,522,109.18/90,673.62
  6. Step 6: Final answer
    x = 57,023.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.