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Finding the Fourth Proportional to 61,054.72, 91,591.26 and 21,612.22

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Solution

The fourth proportional to 61,054.72, 91,591.26 and 21,612.22 is: 32,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,054.72 : 91,591.26 = 21,612.22 : x
  2. Step 2: Convert to fraction form
    61,054.72/91,591.26 = 21,612.22/x
  3. Step 3: Cross multiply
    61,054.72x = 91,591.26 × 21,612.22
  4. Step 4: Simplify right side
    61,054.72x = 1,979,490,461.20
  5. Step 5: Solve for x
    x = 1,979,490,461.20/61,054.72
  6. Step 6: Final answer
    x = 32,421.58

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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.