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Finding the Fourth Proportional to 72,064.08, 108,081.14 and 19,461.26

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Solution

The fourth proportional to 72,064.08, 108,081.14 and 19,461.26 is: 29,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,064.08 : 108,081.14 = 19,461.26 : x
  2. Step 2: Convert to fraction form
    72,064.08/108,081.14 = 19,461.26/x
  3. Step 3: Cross multiply
    72,064.08x = 108,081.14 × 19,461.26
  4. Step 4: Simplify right side
    72,064.08x = 2,103,395,339.53
  5. Step 5: Solve for x
    x = 2,103,395,339.53/72,064.08
  6. Step 6: Final answer
    x = 29,187.85

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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.