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Finding the Fourth Proportional to 61,805.86, 85,306 and 36,320.41

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Solution

The fourth proportional to 61,805.86, 85,306 and 36,320.41 is: 50,130.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,805.86 : 85,306 = 36,320.41 : x
  2. Step 2: Convert to fraction form
    61,805.86/85,306 = 36,320.41/x
  3. Step 3: Cross multiply
    61,805.86x = 85,306 × 36,320.41
  4. Step 4: Simplify right side
    61,805.86x = 3,098,348,468.93
  5. Step 5: Solve for x
    x = 3,098,348,468.93/61,805.86
  6. Step 6: Final answer
    x = 50,130.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.