Home / 74,806.28-112,112.44-30,381

Finding the Fourth Proportional to 74,806.28, 112,112.44 and 30,381

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Solution

The fourth proportional to 74,806.28, 112,112.44 and 30,381 is: 45,532.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,806.28 : 112,112.44 = 30,381 : x
  2. Step 2: Convert to fraction form
    74,806.28/112,112.44 = 30,381/x
  3. Step 3: Cross multiply
    74,806.28x = 112,112.44 × 30,381
  4. Step 4: Simplify right side
    74,806.28x = 3,406,088,039.64
  5. Step 5: Solve for x
    x = 3,406,088,039.64/74,806.28
  6. Step 6: Final answer
    x = 45,532.11

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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.