Home / 72,246.22-99,695.91-39,979.42

Finding the Fourth Proportional to 72,246.22, 99,695.91 and 39,979.42

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Solution

The fourth proportional to 72,246.22, 99,695.91 and 39,979.42 is: 55,169.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,246.22 : 99,695.91 = 39,979.42 : x
  2. Step 2: Convert to fraction form
    72,246.22/99,695.91 = 39,979.42/x
  3. Step 3: Cross multiply
    72,246.22x = 99,695.91 × 39,979.42
  4. Step 4: Simplify right side
    72,246.22x = 3,985,784,658.17
  5. Step 5: Solve for x
    x = 3,985,784,658.17/72,246.22
  6. Step 6: Final answer
    x = 55,169.46

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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.