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Finding the Fourth Proportional to 61,137.60, 91,656.96 and 21,673.20

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Solution

The fourth proportional to 61,137.60, 91,656.96 and 21,673.20 is: 32,492.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,137.60 : 91,656.96 = 21,673.20 : x
  2. Step 2: Convert to fraction form
    61,137.60/91,656.96 = 21,673.20/x
  3. Step 3: Cross multiply
    61,137.60x = 91,656.96 × 21,673.20
  4. Step 4: Simplify right side
    61,137.60x = 1,986,499,625.47
  5. Step 5: Solve for x
    x = 1,986,499,625.47/61,137.60
  6. Step 6: Final answer
    x = 32,492.27

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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.