Home / 65,456.19-90,327.20-40,005.14

Finding the Fourth Proportional to 65,456.19, 90,327.20 and 40,005.14

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Solution

The fourth proportional to 65,456.19, 90,327.20 and 40,005.14 is: 55,205.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,456.19 : 90,327.20 = 40,005.14 : x
  2. Step 2: Convert to fraction form
    65,456.19/90,327.20 = 40,005.14/x
  3. Step 3: Cross multiply
    65,456.19x = 90,327.20 × 40,005.14
  4. Step 4: Simplify right side
    65,456.19x = 3,613,551,630.15
  5. Step 5: Solve for x
    x = 3,613,551,630.15/65,456.19
  6. Step 6: Final answer
    x = 55,205.65

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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.