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Finding the Fourth Proportional to 73,156.86, 100,955.84 and 39,622.86

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Solution

The fourth proportional to 73,156.86, 100,955.84 and 39,622.86 is: 54,679.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,156.86 : 100,955.84 = 39,622.86 : x
  2. Step 2: Convert to fraction form
    73,156.86/100,955.84 = 39,622.86/x
  3. Step 3: Cross multiply
    73,156.86x = 100,955.84 × 39,622.86
  4. Step 4: Simplify right side
    73,156.86x = 4,000,158,916.39
  5. Step 5: Solve for x
    x = 4,000,158,916.39/73,156.86
  6. Step 6: Final answer
    x = 54,679.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.