Home / 74,811.28-112,119.94-30,386

Finding the Fourth Proportional to 74,811.28, 112,119.94 and 30,386

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Solution

The fourth proportional to 74,811.28, 112,119.94 and 30,386 is: 45,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,811.28 : 112,119.94 = 30,386 : x
  2. Step 2: Convert to fraction form
    74,811.28/112,119.94 = 30,386/x
  3. Step 3: Cross multiply
    74,811.28x = 112,119.94 × 30,386
  4. Step 4: Simplify right side
    74,811.28x = 3,406,876,496.84
  5. Step 5: Solve for x
    x = 3,406,876,496.84/74,811.28
  6. Step 6: Final answer
    x = 45,539.61

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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.