Home / 72,174.11-99,598.55-40,345.97

Finding the Fourth Proportional to 72,174.11, 99,598.55 and 40,345.97

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Solution

The fourth proportional to 72,174.11, 99,598.55 and 40,345.97 is: 55,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.11 : 99,598.55 = 40,345.97 : x
  2. Step 2: Convert to fraction form
    72,174.11/99,598.55 = 40,345.97/x
  3. Step 3: Cross multiply
    72,174.11x = 99,598.55 × 40,345.97
  4. Step 4: Simplify right side
    72,174.11x = 4,018,399,410.62
  5. Step 5: Solve for x
    x = 4,018,399,410.62/72,174.11
  6. Step 6: Final answer
    x = 55,676.47

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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.