Home / 38,715.30-57,986.55-31,803.30

Finding the Fourth Proportional to 38,715.30, 57,986.55 and 31,803.30

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Solution

The fourth proportional to 38,715.30, 57,986.55 and 31,803.30 is: 47,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,715.30 : 57,986.55 = 31,803.30 : x
  2. Step 2: Convert to fraction form
    38,715.30/57,986.55 = 31,803.30/x
  3. Step 3: Cross multiply
    38,715.30x = 57,986.55 × 31,803.30
  4. Step 4: Simplify right side
    38,715.30x = 1,844,163,645.62
  5. Step 5: Solve for x
    x = 1,844,163,645.62/38,715.30
  6. Step 6: Final answer
    x = 47,633.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.