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Finding the Fourth Proportional to 84,895.01, 127,342.05 and 21,715.04

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Solution

The fourth proportional to 84,895.01, 127,342.05 and 21,715.04 is: 32,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,895.01 : 127,342.05 = 21,715.04 : x
  2. Step 2: Convert to fraction form
    84,895.01/127,342.05 = 21,715.04/x
  3. Step 3: Cross multiply
    84,895.01x = 127,342.05 × 21,715.04
  4. Step 4: Simplify right side
    84,895.01x = 2,765,237,291.13
  5. Step 5: Solve for x
    x = 2,765,237,291.13/84,895.01
  6. Step 6: Final answer
    x = 32,572.44

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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.