Home / 72,967.28-109,386.32-28,625.85

Finding the Fourth Proportional to 72,967.28, 109,386.32 and 28,625.85

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Solution

The fourth proportional to 72,967.28, 109,386.32 and 28,625.85 is: 42,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,967.28 : 109,386.32 = 28,625.85 : x
  2. Step 2: Convert to fraction form
    72,967.28/109,386.32 = 28,625.85/x
  3. Step 3: Cross multiply
    72,967.28x = 109,386.32 × 28,625.85
  4. Step 4: Simplify right side
    72,967.28x = 3,131,276,245.24
  5. Step 5: Solve for x
    x = 3,131,276,245.24/72,967.28
  6. Step 6: Final answer
    x = 42,913.43

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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.