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Finding the Fourth Proportional to 61,060.60, 91,607.10 and 21,613.60

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Solution

The fourth proportional to 61,060.60, 91,607.10 and 21,613.60 is: 32,426.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,060.60 : 91,607.10 = 21,613.60 : x
  2. Step 2: Convert to fraction form
    61,060.60/91,607.10 = 21,613.60/x
  3. Step 3: Cross multiply
    61,060.60x = 91,607.10 × 21,613.60
  4. Step 4: Simplify right side
    61,060.60x = 1,979,959,216.56
  5. Step 5: Solve for x
    x = 1,979,959,216.56/61,060.60
  6. Step 6: Final answer
    x = 32,426.13

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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.