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Finding the Fourth Proportional to 61,086.41, 91,607.10 and 21,095.22

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Solution

The fourth proportional to 61,086.41, 91,607.10 and 21,095.22 is: 31,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,086.41 : 91,607.10 = 21,095.22 : x
  2. Step 2: Convert to fraction form
    61,086.41/91,607.10 = 21,095.22/x
  3. Step 3: Cross multiply
    61,086.41x = 91,607.10 × 21,095.22
  4. Step 4: Simplify right side
    61,086.41x = 1,932,471,928.06
  5. Step 5: Solve for x
    x = 1,932,471,928.06/61,086.41
  6. Step 6: Final answer
    x = 31,635.05

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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.