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Finding the Fourth Proportional to 61,320.66, 91,992.39 and 21,337.98

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Solution

The fourth proportional to 61,320.66, 91,992.39 and 21,337.98 is: 32,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,320.66 : 91,992.39 = 21,337.98 : x
  2. Step 2: Convert to fraction form
    61,320.66/91,992.39 = 21,337.98/x
  3. Step 3: Cross multiply
    61,320.66x = 91,992.39 × 21,337.98
  4. Step 4: Simplify right side
    61,320.66x = 1,962,931,777.97
  5. Step 5: Solve for x
    x = 1,962,931,777.97/61,320.66
  6. Step 6: Final answer
    x = 32,010.94

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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.