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Finding the Fourth Proportional to 84,073.96, 126,113.58 and 31,473.40

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Solution

The fourth proportional to 84,073.96, 126,113.58 and 31,473.40 is: 47,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,073.96 : 126,113.58 = 31,473.40 : x
  2. Step 2: Convert to fraction form
    84,073.96/126,113.58 = 31,473.40/x
  3. Step 3: Cross multiply
    84,073.96x = 126,113.58 × 31,473.40
  4. Step 4: Simplify right side
    84,073.96x = 3,969,223,148.77
  5. Step 5: Solve for x
    x = 3,969,223,148.77/84,073.96
  6. Step 6: Final answer
    x = 47,211.09

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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.