Home / 57,715.83-79,649.09-31,874.30

Finding the Fourth Proportional to 57,715.83, 79,649.09 and 31,874.30

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Solution

The fourth proportional to 57,715.83, 79,649.09 and 31,874.30 is: 43,987.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,715.83 : 79,649.09 = 31,874.30 : x
  2. Step 2: Convert to fraction form
    57,715.83/79,649.09 = 31,874.30/x
  3. Step 3: Cross multiply
    57,715.83x = 79,649.09 × 31,874.30
  4. Step 4: Simplify right side
    57,715.83x = 2,538,759,268.20
  5. Step 5: Solve for x
    x = 2,538,759,268.20/57,715.83
  6. Step 6: Final answer
    x = 43,987.23

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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.