Home / 74,729.80-112,138.14-28,015.24

Finding the Fourth Proportional to 74,729.80, 112,138.14 and 28,015.24

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Solution

The fourth proportional to 74,729.80, 112,138.14 and 28,015.24 is: 42,039.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,729.80 : 112,138.14 = 28,015.24 : x
  2. Step 2: Convert to fraction form
    74,729.80/112,138.14 = 28,015.24/x
  3. Step 3: Cross multiply
    74,729.80x = 112,138.14 × 28,015.24
  4. Step 4: Simplify right side
    74,729.80x = 3,141,576,905.25
  5. Step 5: Solve for x
    x = 3,141,576,905.25/74,729.80
  6. Step 6: Final answer
    x = 42,039.15

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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.