Home / 72,747.67-100,383.96-40,909.81

Finding the Fourth Proportional to 72,747.67, 100,383.96 and 40,909.81

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Solution

The fourth proportional to 72,747.67, 100,383.96 and 40,909.81 is: 56,451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,747.67 : 100,383.96 = 40,909.81 : x
  2. Step 2: Convert to fraction form
    72,747.67/100,383.96 = 40,909.81/x
  3. Step 3: Cross multiply
    72,747.67x = 100,383.96 × 40,909.81
  4. Step 4: Simplify right side
    72,747.67x = 4,106,688,730.65
  5. Step 5: Solve for x
    x = 4,106,688,730.65/72,747.67
  6. Step 6: Final answer
    x = 56,451.14

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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.