Home / 72,736.12-100,318.85-49,779.52

Finding the Fourth Proportional to 72,736.12, 100,318.85 and 49,779.52

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Solution

The fourth proportional to 72,736.12, 100,318.85 and 49,779.52 is: 68,656.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,736.12 : 100,318.85 = 49,779.52 : x
  2. Step 2: Convert to fraction form
    72,736.12/100,318.85 = 49,779.52/x
  3. Step 3: Cross multiply
    72,736.12x = 100,318.85 × 49,779.52
  4. Step 4: Simplify right side
    72,736.12x = 4,993,823,449.46
  5. Step 5: Solve for x
    x = 4,993,823,449.46/72,736.12
  6. Step 6: Final answer
    x = 68,656.73

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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.