Home / 65,175.20-89,936.40-38,318.84

Finding the Fourth Proportional to 65,175.20, 89,936.40 and 38,318.84

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Solution

The fourth proportional to 65,175.20, 89,936.40 and 38,318.84 is: 52,876.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,175.20 : 89,936.40 = 38,318.84 : x
  2. Step 2: Convert to fraction form
    65,175.20/89,936.40 = 38,318.84/x
  3. Step 3: Cross multiply
    65,175.20x = 89,936.40 × 38,318.84
  4. Step 4: Simplify right side
    65,175.20x = 3,446,258,521.78
  5. Step 5: Solve for x
    x = 3,446,258,521.78/65,175.20
  6. Step 6: Final answer
    x = 52,876.84

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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.