Home / 74,074.52-111,137.76-21,487.16

Finding the Fourth Proportional to 74,074.52, 111,137.76 and 21,487.16

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Solution

The fourth proportional to 74,074.52, 111,137.76 and 21,487.16 is: 32,238.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,074.52 : 111,137.76 = 21,487.16 : x
  2. Step 2: Convert to fraction form
    74,074.52/111,137.76 = 21,487.16/x
  3. Step 3: Cross multiply
    74,074.52x = 111,137.76 × 21,487.16
  4. Step 4: Simplify right side
    74,074.52x = 2,388,034,831.16
  5. Step 5: Solve for x
    x = 2,388,034,831.16/74,074.52
  6. Step 6: Final answer
    x = 32,238.28

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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.