Home / 31,840.40-47,811.60-25,320.80

Finding the Fourth Proportional to 31,840.40, 47,811.60 and 25,320.80

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Solution

The fourth proportional to 31,840.40, 47,811.60 and 25,320.80 is: 38,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,840.40 : 47,811.60 = 25,320.80 : x
  2. Step 2: Convert to fraction form
    31,840.40/47,811.60 = 25,320.80/x
  3. Step 3: Cross multiply
    31,840.40x = 47,811.60 × 25,320.80
  4. Step 4: Simplify right side
    31,840.40x = 1,210,627,961.28
  5. Step 5: Solve for x
    x = 1,210,627,961.28/31,840.40
  6. Step 6: Final answer
    x = 38,021.76

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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.