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Finding the Fourth Proportional to 72,174.80, 100,037.92 and 68,021.92

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Solution

The fourth proportional to 72,174.80, 100,037.92 and 68,021.92 is: 94,281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.80 : 100,037.92 = 68,021.92 : x
  2. Step 2: Convert to fraction form
    72,174.80/100,037.92 = 68,021.92/x
  3. Step 3: Cross multiply
    72,174.80x = 100,037.92 × 68,021.92
  4. Step 4: Simplify right side
    72,174.80x = 6,804,771,391.21
  5. Step 5: Solve for x
    x = 6,804,771,391.21/72,174.80
  6. Step 6: Final answer
    x = 94,281.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.