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Finding the Fourth Proportional to 65,952.48, 91,015.20 and 38,726.76

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Solution

The fourth proportional to 65,952.48, 91,015.20 and 38,726.76 is: 53,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,952.48 : 91,015.20 = 38,726.76 : x
  2. Step 2: Convert to fraction form
    65,952.48/91,015.20 = 38,726.76/x
  3. Step 3: Cross multiply
    65,952.48x = 91,015.20 × 38,726.76
  4. Step 4: Simplify right side
    65,952.48x = 3,524,723,806.75
  5. Step 5: Solve for x
    x = 3,524,723,806.75/65,952.48
  6. Step 6: Final answer
    x = 53,443.39

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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.