Home / 72,985.50-109,463.66-20,395.44

Finding the Fourth Proportional to 72,985.50, 109,463.66 and 20,395.44

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Solution

The fourth proportional to 72,985.50, 109,463.66 and 20,395.44 is: 30,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,985.50 : 109,463.66 = 20,395.44 : x
  2. Step 2: Convert to fraction form
    72,985.50/109,463.66 = 20,395.44/x
  3. Step 3: Cross multiply
    72,985.50x = 109,463.66 × 20,395.44
  4. Step 4: Simplify right side
    72,985.50x = 2,232,559,560.70
  5. Step 5: Solve for x
    x = 2,232,559,560.70/72,985.50
  6. Step 6: Final answer
    x = 30,589.08

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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.