Home / 84,310.86-126,463.35-21,131.55

Finding the Fourth Proportional to 84,310.86, 126,463.35 and 21,131.55

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Solution

The fourth proportional to 84,310.86, 126,463.35 and 21,131.55 is: 31,696.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,310.86 : 126,463.35 = 21,131.55 : x
  2. Step 2: Convert to fraction form
    84,310.86/126,463.35 = 21,131.55/x
  3. Step 3: Cross multiply
    84,310.86x = 126,463.35 × 21,131.55
  4. Step 4: Simplify right side
    84,310.86x = 2,672,366,603.69
  5. Step 5: Solve for x
    x = 2,672,366,603.69/84,310.86
  6. Step 6: Final answer
    x = 31,696.59

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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.