Home / 84,312.06-126,465.04-21,132.66

Finding the Fourth Proportional to 84,312.06, 126,465.04 and 21,132.66

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Solution

The fourth proportional to 84,312.06, 126,465.04 and 21,132.66 is: 31,698.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,312.06 : 126,465.04 = 21,132.66 : x
  2. Step 2: Convert to fraction form
    84,312.06/126,465.04 = 21,132.66/x
  3. Step 3: Cross multiply
    84,312.06x = 126,465.04 × 21,132.66
  4. Step 4: Simplify right side
    84,312.06x = 2,672,542,692.21
  5. Step 5: Solve for x
    x = 2,672,542,692.21/84,312.06
  6. Step 6: Final answer
    x = 31,698.23

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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.