Home / 65,687.32-90,647.70-40,189.24

Finding the Fourth Proportional to 65,687.32, 90,647.70 and 40,189.24

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Solution

The fourth proportional to 65,687.32, 90,647.70 and 40,189.24 is: 55,460.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,687.32 : 90,647.70 = 40,189.24 : x
  2. Step 2: Convert to fraction form
    65,687.32/90,647.70 = 40,189.24/x
  3. Step 3: Cross multiply
    65,687.32x = 90,647.70 × 40,189.24
  4. Step 4: Simplify right side
    65,687.32x = 3,643,062,170.75
  5. Step 5: Solve for x
    x = 3,643,062,170.75/65,687.32
  6. Step 6: Final answer
    x = 55,460.66

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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.