Home / 57,082.56-78,778.08-31,940.16

Finding the Fourth Proportional to 57,082.56, 78,778.08 and 31,940.16

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Solution

The fourth proportional to 57,082.56, 78,778.08 and 31,940.16 is: 44,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,082.56 : 78,778.08 = 31,940.16 : x
  2. Step 2: Convert to fraction form
    57,082.56/78,778.08 = 31,940.16/x
  3. Step 3: Cross multiply
    57,082.56x = 78,778.08 × 31,940.16
  4. Step 4: Simplify right side
    57,082.56x = 2,516,184,479.69
  5. Step 5: Solve for x
    x = 2,516,184,479.69/57,082.56
  6. Step 6: Final answer
    x = 44,079.74

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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.