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Finding the Fourth Proportional to 101,508, 140,081.04 and 56,804.64

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Solution

The fourth proportional to 101,508, 140,081.04 and 56,804.64 is: 78,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,508 : 140,081.04 = 56,804.64 : x
  2. Step 2: Convert to fraction form
    101,508/140,081.04 = 56,804.64/x
  3. Step 3: Cross multiply
    101,508x = 140,081.04 × 56,804.64
  4. Step 4: Simplify right side
    101,508x = 7,957,253,048.03
  5. Step 5: Solve for x
    x = 7,957,253,048.03/101,508
  6. Step 6: Final answer
    x = 78,390.40

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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.