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Finding the Fourth Proportional to 72,010.91, 107,913.41 and 52,885.53

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Solution

The fourth proportional to 72,010.91, 107,913.41 and 52,885.53 is: 79,252.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,010.91 : 107,913.41 = 52,885.53 : x
  2. Step 2: Convert to fraction form
    72,010.91/107,913.41 = 52,885.53/x
  3. Step 3: Cross multiply
    72,010.91x = 107,913.41 × 52,885.53
  4. Step 4: Simplify right side
    72,010.91x = 5,707,057,881.96
  5. Step 5: Solve for x
    x = 5,707,057,881.96/72,010.91
  6. Step 6: Final answer
    x = 79,252.68

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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.