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Finding the Fourth Proportional to 84,683.87, 127,025.85 and 21,508.73

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Solution

The fourth proportional to 84,683.87, 127,025.85 and 21,508.73 is: 32,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,683.87 : 127,025.85 = 21,508.73 : x
  2. Step 2: Convert to fraction form
    84,683.87/127,025.85 = 21,508.73/x
  3. Step 3: Cross multiply
    84,683.87x = 127,025.85 × 21,508.73
  4. Step 4: Simplify right side
    84,683.87x = 2,732,164,035.21
  5. Step 5: Solve for x
    x = 2,732,164,035.21/84,683.87
  6. Step 6: Final answer
    x = 32,263.10

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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.