Home / 72,763.22-109,186.75-30,640.02

Finding the Fourth Proportional to 72,763.22, 109,186.75 and 30,640.02

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Solution

The fourth proportional to 72,763.22, 109,186.75 and 30,640.02 is: 45,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763.22 : 109,186.75 = 30,640.02 : x
  2. Step 2: Convert to fraction form
    72,763.22/109,186.75 = 30,640.02/x
  3. Step 3: Cross multiply
    72,763.22x = 109,186.75 × 30,640.02
  4. Step 4: Simplify right side
    72,763.22x = 3,345,484,203.74
  5. Step 5: Solve for x
    x = 3,345,484,203.74/72,763.22
  6. Step 6: Final answer
    x = 45,977.68

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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.