Home / 72,009.54-99,373.14-40,178.43

Finding the Fourth Proportional to 72,009.54, 99,373.14 and 40,178.43

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Solution

The fourth proportional to 72,009.54, 99,373.14 and 40,178.43 is: 55,446.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,009.54 : 99,373.14 = 40,178.43 : x
  2. Step 2: Convert to fraction form
    72,009.54/99,373.14 = 40,178.43/x
  3. Step 3: Cross multiply
    72,009.54x = 99,373.14 × 40,178.43
  4. Step 4: Simplify right side
    72,009.54x = 3,992,656,749.37
  5. Step 5: Solve for x
    x = 3,992,656,749.37/72,009.54
  6. Step 6: Final answer
    x = 55,446.22

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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.