Home / 75,660.75-104,419.13-42,126.75

Finding the Fourth Proportional to 75,660.75, 104,419.13 and 42,126.75

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Solution

The fourth proportional to 75,660.75, 104,419.13 and 42,126.75 is: 58,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,660.75 : 104,419.13 = 42,126.75 : x
  2. Step 2: Convert to fraction form
    75,660.75/104,419.13 = 42,126.75/x
  3. Step 3: Cross multiply
    75,660.75x = 104,419.13 × 42,126.75
  4. Step 4: Simplify right side
    75,660.75x = 4,398,838,374.09
  5. Step 5: Solve for x
    x = 4,398,838,374.09/75,660.75
  6. Step 6: Final answer
    x = 58,138.97

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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.