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Finding the Fourth Proportional to 84,683.76, 127,025.69 and 21,508.62

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Solution

The fourth proportional to 84,683.76, 127,025.69 and 21,508.62 is: 32,262.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,683.76 : 127,025.69 = 21,508.62 : x
  2. Step 2: Convert to fraction form
    84,683.76/127,025.69 = 21,508.62/x
  3. Step 3: Cross multiply
    84,683.76x = 127,025.69 × 21,508.62
  4. Step 4: Simplify right side
    84,683.76x = 2,732,146,688.21
  5. Step 5: Solve for x
    x = 2,732,146,688.21/84,683.76
  6. Step 6: Final answer
    x = 32,262.94

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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.