Home / 57,278.53-79,045.03-31,785.40

Finding the Fourth Proportional to 57,278.53, 79,045.03 and 31,785.40

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Solution

The fourth proportional to 57,278.53, 79,045.03 and 31,785.40 is: 43,864.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,278.53 : 79,045.03 = 31,785.40 : x
  2. Step 2: Convert to fraction form
    57,278.53/79,045.03 = 31,785.40/x
  3. Step 3: Cross multiply
    57,278.53x = 79,045.03 × 31,785.40
  4. Step 4: Simplify right side
    57,278.53x = 2,512,477,896.56
  5. Step 5: Solve for x
    x = 2,512,477,896.56/57,278.53
  6. Step 6: Final answer
    x = 43,864.22

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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.