Home / 57,029.88-78,700.40-31,535.68

Finding the Fourth Proportional to 57,029.88, 78,700.40 and 31,535.68

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Solution

The fourth proportional to 57,029.88, 78,700.40 and 31,535.68 is: 43,518.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,029.88 : 78,700.40 = 31,535.68 : x
  2. Step 2: Convert to fraction form
    57,029.88/78,700.40 = 31,535.68/x
  3. Step 3: Cross multiply
    57,029.88x = 78,700.40 × 31,535.68
  4. Step 4: Simplify right side
    57,029.88x = 2,481,870,630.27
  5. Step 5: Solve for x
    x = 2,481,870,630.27/57,029.88
  6. Step 6: Final answer
    x = 43,518.78

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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.