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Finding the Fourth Proportional to 75,988.30, 114,015.25 and 40,920.97

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Solution

The fourth proportional to 75,988.30, 114,015.25 and 40,920.97 is: 61,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,988.30 : 114,015.25 = 40,920.97 : x
  2. Step 2: Convert to fraction form
    75,988.30/114,015.25 = 40,920.97/x
  3. Step 3: Cross multiply
    75,988.30x = 114,015.25 × 40,920.97
  4. Step 4: Simplify right side
    75,988.30x = 4,665,614,624.79
  5. Step 5: Solve for x
    x = 4,665,614,624.79/75,988.30
  6. Step 6: Final answer
    x = 61,399.12

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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.