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Finding the Fourth Proportional to 75,195, 112,480.89 and 57,290.25

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Solution

The fourth proportional to 75,195, 112,480.89 and 57,290.25 is: 85,697.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,195 : 112,480.89 = 57,290.25 : x
  2. Step 2: Convert to fraction form
    75,195/112,480.89 = 57,290.25/x
  3. Step 3: Cross multiply
    75,195x = 112,480.89 × 57,290.25
  4. Step 4: Simplify right side
    75,195x = 6,444,058,308.32
  5. Step 5: Solve for x
    x = 6,444,058,308.32/75,195
  6. Step 6: Final answer
    x = 85,697.96

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1.5x scale

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.