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Finding the Fourth Proportional to 72,603.03, 108,910.02 and 20,012.06

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Solution

The fourth proportional to 72,603.03, 108,910.02 and 20,012.06 is: 30,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.03 : 108,910.02 = 20,012.06 : x
  2. Step 2: Convert to fraction form
    72,603.03/108,910.02 = 20,012.06/x
  3. Step 3: Cross multiply
    72,603.03x = 108,910.02 × 20,012.06
  4. Step 4: Simplify right side
    72,603.03x = 2,179,514,089.59
  5. Step 5: Solve for x
    x = 2,179,514,089.59/72,603.03
  6. Step 6: Final answer
    x = 30,019.60

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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.