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Finding the Fourth Proportional to 74,241.74, 111,378.99 and 21,655.34

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Solution

The fourth proportional to 74,241.74, 111,378.99 and 21,655.34 is: 32,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,241.74 : 111,378.99 = 21,655.34 : x
  2. Step 2: Convert to fraction form
    74,241.74/111,378.99 = 21,655.34/x
  3. Step 3: Cross multiply
    74,241.74x = 111,378.99 × 21,655.34
  4. Step 4: Simplify right side
    74,241.74x = 2,411,949,897.31
  5. Step 5: Solve for x
    x = 2,411,949,897.31/74,241.74
  6. Step 6: Final answer
    x = 32,487.79

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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.