Home / 72,973.40-109,447.14-20,369.84

Finding the Fourth Proportional to 72,973.40, 109,447.14 and 20,369.84

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Solution

The fourth proportional to 72,973.40, 109,447.14 and 20,369.84 is: 30,551.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,973.40 : 109,447.14 = 20,369.84 : x
  2. Step 2: Convert to fraction form
    72,973.40/109,447.14 = 20,369.84/x
  3. Step 3: Cross multiply
    72,973.40x = 109,447.14 × 20,369.84
  4. Step 4: Simplify right side
    72,973.40x = 2,229,420,730.26
  5. Step 5: Solve for x
    x = 2,229,420,730.26/72,973.40
  6. Step 6: Final answer
    x = 30,551.14

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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.