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Finding the Fourth Proportional to 67,869.48, 101,813.94 and 21,127.08

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Solution

The fourth proportional to 67,869.48, 101,813.94 and 21,127.08 is: 31,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,869.48 : 101,813.94 = 21,127.08 : x
  2. Step 2: Convert to fraction form
    67,869.48/101,813.94 = 21,127.08/x
  3. Step 3: Cross multiply
    67,869.48x = 101,813.94 × 21,127.08
  4. Step 4: Simplify right side
    67,869.48x = 2,151,031,255.50
  5. Step 5: Solve for x
    x = 2,151,031,255.50/67,869.48
  6. Step 6: Final answer
    x = 31,693.65

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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.