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Finding the Fourth Proportional to 61,086, 91,606.53 and 21,094.86

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Solution

The fourth proportional to 61,086, 91,606.53 and 21,094.86 is: 31,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,086 : 91,606.53 = 21,094.86 : x
  2. Step 2: Convert to fraction form
    61,086/91,606.53 = 21,094.86/x
  3. Step 3: Cross multiply
    61,086x = 91,606.53 × 21,094.86
  4. Step 4: Simplify right side
    61,086x = 1,932,426,925.44
  5. Step 5: Solve for x
    x = 1,932,426,925.44/61,086
  6. Step 6: Final answer
    x = 31,634.53

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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.