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Finding the Fourth Proportional to 84,683.21, 127,024.86 and 21,508.07

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Solution

The fourth proportional to 84,683.21, 127,024.86 and 21,508.07 is: 32,262.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,683.21 : 127,024.86 = 21,508.07 : x
  2. Step 2: Convert to fraction form
    84,683.21/127,024.86 = 21,508.07/x
  3. Step 3: Cross multiply
    84,683.21x = 127,024.86 × 21,508.07
  4. Step 4: Simplify right side
    84,683.21x = 2,732,059,580.62
  5. Step 5: Solve for x
    x = 2,732,059,580.62/84,683.21
  6. Step 6: Final answer
    x = 32,262.12

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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.