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Finding the Fourth Proportional to 61,398.52, 92,113.09 and 21,418.07

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Solution

The fourth proportional to 61,398.52, 92,113.09 and 21,418.07 is: 32,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,398.52 : 92,113.09 = 21,418.07 : x
  2. Step 2: Convert to fraction form
    61,398.52/92,113.09 = 21,418.07/x
  3. Step 3: Cross multiply
    61,398.52x = 92,113.09 × 21,418.07
  4. Step 4: Simplify right side
    61,398.52x = 1,972,884,095.43
  5. Step 5: Solve for x
    x = 1,972,884,095.43/61,398.52
  6. Step 6: Final answer
    x = 32,132.44

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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.