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Finding the Fourth Proportional to 72,814.48, 100,488 and 44,512

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Solution

The fourth proportional to 72,814.48, 100,488 and 44,512 is: 61,429.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,814.48 : 100,488 = 44,512 : x
  2. Step 2: Convert to fraction form
    72,814.48/100,488 = 44,512/x
  3. Step 3: Cross multiply
    72,814.48x = 100,488 × 44,512
  4. Step 4: Simplify right side
    72,814.48x = 4,472,921,856
  5. Step 5: Solve for x
    x = 4,472,921,856/72,814.48
  6. Step 6: Final answer
    x = 61,429.02

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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.