Home / 57,257.24-78,931.92-40,209.56

Finding the Fourth Proportional to 57,257.24, 78,931.92 and 40,209.56

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Solution

The fourth proportional to 57,257.24, 78,931.92 and 40,209.56 is: 55,430.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,257.24 : 78,931.92 = 40,209.56 : x
  2. Step 2: Convert to fraction form
    57,257.24/78,931.92 = 40,209.56/x
  3. Step 3: Cross multiply
    57,257.24x = 78,931.92 × 40,209.56
  4. Step 4: Simplify right side
    57,257.24x = 3,173,817,773.16
  5. Step 5: Solve for x
    x = 3,173,817,773.16/57,257.24
  6. Step 6: Final answer
    x = 55,430.86

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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.