Home / 65,867.38-90,891.21-39,005.35

Finding the Fourth Proportional to 65,867.38, 90,891.21 and 39,005.35

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Solution

The fourth proportional to 65,867.38, 90,891.21 and 39,005.35 is: 53,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,867.38 : 90,891.21 = 39,005.35 : x
  2. Step 2: Convert to fraction form
    65,867.38/90,891.21 = 39,005.35/x
  3. Step 3: Cross multiply
    65,867.38x = 90,891.21 × 39,005.35
  4. Step 4: Simplify right side
    65,867.38x = 3,545,243,377.02
  5. Step 5: Solve for x
    x = 3,545,243,377.02/65,867.38
  6. Step 6: Final answer
    x = 53,823.96

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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.