Home / 31,867.04-47,660.64-28,381.60

Finding the Fourth Proportional to 31,867.04, 47,660.64 and 28,381.60

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Solution

The fourth proportional to 31,867.04, 47,660.64 and 28,381.60 is: 42,447.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,867.04 : 47,660.64 = 28,381.60 : x
  2. Step 2: Convert to fraction form
    31,867.04/47,660.64 = 28,381.60/x
  3. Step 3: Cross multiply
    31,867.04x = 47,660.64 × 28,381.60
  4. Step 4: Simplify right side
    31,867.04x = 1,352,685,220.22
  5. Step 5: Solve for x
    x = 1,352,685,220.22/31,867.04
  6. Step 6: Final answer
    x = 42,447.78

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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.