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Finding the Fourth Proportional to 75,713.80, 113,301.90 and 65,960.20

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Solution

The fourth proportional to 75,713.80, 113,301.90 and 65,960.20 is: 98,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,713.80 : 113,301.90 = 65,960.20 : x
  2. Step 2: Convert to fraction form
    75,713.80/113,301.90 = 65,960.20/x
  3. Step 3: Cross multiply
    75,713.80x = 113,301.90 × 65,960.20
  4. Step 4: Simplify right side
    75,713.80x = 7,473,415,984.38
  5. Step 5: Solve for x
    x = 7,473,415,984.38/75,713.80
  6. Step 6: Final answer
    x = 98,706.13

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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.