Home / 49,981.14-74,971.74-20,412.90

Finding the Fourth Proportional to 49,981.14, 74,971.74 and 20,412.90

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Solution

The fourth proportional to 49,981.14, 74,971.74 and 20,412.90 is: 30,619.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,981.14 : 74,971.74 = 20,412.90 : x
  2. Step 2: Convert to fraction form
    49,981.14/74,971.74 = 20,412.90/x
  3. Step 3: Cross multiply
    49,981.14x = 74,971.74 × 20,412.90
  4. Step 4: Simplify right side
    49,981.14x = 1,530,390,631.45
  5. Step 5: Solve for x
    x = 1,530,390,631.45/49,981.14
  6. Step 6: Final answer
    x = 30,619.36

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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.