Home / 31,816.80-47,725.20-29,289.60

Finding the Fourth Proportional to 31,816.80, 47,725.20 and 29,289.60

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Solution

The fourth proportional to 31,816.80, 47,725.20 and 29,289.60 is: 43,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,816.80 : 47,725.20 = 29,289.60 : x
  2. Step 2: Convert to fraction form
    31,816.80/47,725.20 = 29,289.60/x
  3. Step 3: Cross multiply
    31,816.80x = 47,725.20 × 29,289.60
  4. Step 4: Simplify right side
    31,816.80x = 1,397,852,017.92
  5. Step 5: Solve for x
    x = 1,397,852,017.92/31,816.80
  6. Step 6: Final answer
    x = 43,934.40

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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.