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Finding the Fourth Proportional to 74,770.32, 112,122.67 and 27,990.39

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Solution

The fourth proportional to 74,770.32, 112,122.67 and 27,990.39 is: 41,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,770.32 : 112,122.67 = 27,990.39 : x
  2. Step 2: Convert to fraction form
    74,770.32/112,122.67 = 27,990.39/x
  3. Step 3: Cross multiply
    74,770.32x = 112,122.67 × 27,990.39
  4. Step 4: Simplify right side
    74,770.32x = 3,138,357,261.14
  5. Step 5: Solve for x
    x = 3,138,357,261.14/74,770.32
  6. Step 6: Final answer
    x = 41,973.30

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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.