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Finding the Fourth Proportional to 61,180.31, 91,770.47 and 21,738.98

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Solution

The fourth proportional to 61,180.31, 91,770.47 and 21,738.98 is: 32,608.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,180.31 : 91,770.47 = 21,738.98 : x
  2. Step 2: Convert to fraction form
    61,180.31/91,770.47 = 21,738.98/x
  3. Step 3: Cross multiply
    61,180.31x = 91,770.47 × 21,738.98
  4. Step 4: Simplify right side
    61,180.31x = 1,994,996,614.17
  5. Step 5: Solve for x
    x = 1,994,996,614.17/61,180.31
  6. Step 6: Final answer
    x = 32,608.47

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1.5x scale

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.