Home / 57,028.02-78,698.40-31,877.52

Finding the Fourth Proportional to 57,028.02, 78,698.40 and 31,877.52

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Solution

The fourth proportional to 57,028.02, 78,698.40 and 31,877.52 is: 43,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,028.02 : 78,698.40 = 31,877.52 : x
  2. Step 2: Convert to fraction form
    57,028.02/78,698.40 = 31,877.52/x
  3. Step 3: Cross multiply
    57,028.02x = 78,698.40 × 31,877.52
  4. Step 4: Simplify right side
    57,028.02x = 2,508,709,819.97
  5. Step 5: Solve for x
    x = 2,508,709,819.97/57,028.02
  6. Step 6: Final answer
    x = 43,990.83

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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.