Home / 65,347.13-90,165.12-38,479.83

Finding the Fourth Proportional to 65,347.13, 90,165.12 and 38,479.83

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Solution

The fourth proportional to 65,347.13, 90,165.12 and 38,479.83 is: 53,093.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,347.13 : 90,165.12 = 38,479.83 : x
  2. Step 2: Convert to fraction form
    65,347.13/90,165.12 = 38,479.83/x
  3. Step 3: Cross multiply
    65,347.13x = 90,165.12 × 38,479.83
  4. Step 4: Simplify right side
    65,347.13x = 3,469,538,489.53
  5. Step 5: Solve for x
    x = 3,469,538,489.53/65,347.13
  6. Step 6: Final answer
    x = 53,093.97

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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.