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Finding the Fourth Proportional to 72,118.44, 108,119.13 and 30,030.02

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Solution

The fourth proportional to 72,118.44, 108,119.13 and 30,030.02 is: 45,020.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,118.44 : 108,119.13 = 30,030.02 : x
  2. Step 2: Convert to fraction form
    72,118.44/108,119.13 = 30,030.02/x
  3. Step 3: Cross multiply
    72,118.44x = 108,119.13 × 30,030.02
  4. Step 4: Simplify right side
    72,118.44x = 3,246,819,095.69
  5. Step 5: Solve for x
    x = 3,246,819,095.69/72,118.44
  6. Step 6: Final answer
    x = 45,020.65

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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.