Home / 84,089.75-126,120.04-31,488.35

Finding the Fourth Proportional to 84,089.75, 126,120.04 and 31,488.35

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Solution

The fourth proportional to 84,089.75, 126,120.04 and 31,488.35 is: 47,227.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,089.75 : 126,120.04 = 31,488.35 : x
  2. Step 2: Convert to fraction form
    84,089.75/126,120.04 = 31,488.35/x
  3. Step 3: Cross multiply
    84,089.75x = 126,120.04 × 31,488.35
  4. Step 4: Simplify right side
    84,089.75x = 3,971,311,252.21
  5. Step 5: Solve for x
    x = 3,971,311,252.21/84,089.75
  6. Step 6: Final answer
    x = 47,227.06

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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.