Home / 31,445.86-47,168.76-8,072.29

Finding the Fourth Proportional to 31,445.86, 47,168.76 and 8,072.29

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Solution

The fourth proportional to 31,445.86, 47,168.76 and 8,072.29 is: 12,108.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.86 : 47,168.76 = 8,072.29 : x
  2. Step 2: Convert to fraction form
    31,445.86/47,168.76 = 8,072.29/x
  3. Step 3: Cross multiply
    31,445.86x = 47,168.76 × 8,072.29
  4. Step 4: Simplify right side
    31,445.86x = 380,759,909.66
  5. Step 5: Solve for x
    x = 380,759,909.66/31,445.86
  6. Step 6: Final answer
    x = 12,108.43

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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.