Home / 74,278.71-111,416.94-18,119.25

Finding the Fourth Proportional to 74,278.71, 111,416.94 and 18,119.25

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Solution

The fourth proportional to 74,278.71, 111,416.94 and 18,119.25 is: 27,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,278.71 : 111,416.94 = 18,119.25 : x
  2. Step 2: Convert to fraction form
    74,278.71/111,416.94 = 18,119.25/x
  3. Step 3: Cross multiply
    74,278.71x = 111,416.94 × 18,119.25
  4. Step 4: Simplify right side
    74,278.71x = 2,018,791,390.10
  5. Step 5: Solve for x
    x = 2,018,791,390.10/74,278.71
  6. Step 6: Final answer
    x = 27,178.60

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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.