Home / 53,931.90-80,934.30-18,871.86

Finding the Fourth Proportional to 53,931.90, 80,934.30 and 18,871.86

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Solution

The fourth proportional to 53,931.90, 80,934.30 and 18,871.86 is: 28,320.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,931.90 : 80,934.30 = 18,871.86 : x
  2. Step 2: Convert to fraction form
    53,931.90/80,934.30 = 18,871.86/x
  3. Step 3: Cross multiply
    53,931.90x = 80,934.30 × 18,871.86
  4. Step 4: Simplify right side
    53,931.90x = 1,527,380,684.44
  5. Step 5: Solve for x
    x = 1,527,380,684.44/53,931.90
  6. Step 6: Final answer
    x = 28,320.54

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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.