Home / 39,930.20-59,789.70-31,995.80

Finding the Fourth Proportional to 39,930.20, 59,789.70 and 31,995.80

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Solution

The fourth proportional to 39,930.20, 59,789.70 and 31,995.80 is: 47,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,930.20 : 59,789.70 = 31,995.80 : x
  2. Step 2: Convert to fraction form
    39,930.20/59,789.70 = 31,995.80/x
  3. Step 3: Cross multiply
    39,930.20x = 59,789.70 × 31,995.80
  4. Step 4: Simplify right side
    39,930.20x = 1,913,019,283.26
  5. Step 5: Solve for x
    x = 1,913,019,283.26/39,930.20
  6. Step 6: Final answer
    x = 47,909.08

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1.5x scale

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.