Home / 72,580.14-100,159.11-40,749.04

Finding the Fourth Proportional to 72,580.14, 100,159.11 and 40,749.04

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Solution

The fourth proportional to 72,580.14, 100,159.11 and 40,749.04 is: 56,232.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,580.14 : 100,159.11 = 40,749.04 : x
  2. Step 2: Convert to fraction form
    72,580.14/100,159.11 = 40,749.04/x
  3. Step 3: Cross multiply
    72,580.14x = 100,159.11 × 40,749.04
  4. Step 4: Simplify right side
    72,580.14x = 4,081,387,078.96
  5. Step 5: Solve for x
    x = 4,081,387,078.96/72,580.14
  6. Step 6: Final answer
    x = 56,232.84

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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.