Home / 72,715.57-109,052.28-28,332.43

Finding the Fourth Proportional to 72,715.57, 109,052.28 and 28,332.43

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Solution

The fourth proportional to 72,715.57, 109,052.28 and 28,332.43 is: 42,490.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,715.57 : 109,052.28 = 28,332.43 : x
  2. Step 2: Convert to fraction form
    72,715.57/109,052.28 = 28,332.43/x
  3. Step 3: Cross multiply
    72,715.57x = 109,052.28 × 28,332.43
  4. Step 4: Simplify right side
    72,715.57x = 3,089,716,089.44
  5. Step 5: Solve for x
    x = 3,089,716,089.44/72,715.57
  6. Step 6: Final answer
    x = 42,490.43

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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.