Home / 72,174.48-99,605.44-40,343.52

Finding the Fourth Proportional to 72,174.48, 99,605.44 and 40,343.52

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Solution

The fourth proportional to 72,174.48, 99,605.44 and 40,343.52 is: 55,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.48 : 99,605.44 = 40,343.52 : x
  2. Step 2: Convert to fraction form
    72,174.48/99,605.44 = 40,343.52/x
  3. Step 3: Cross multiply
    72,174.48x = 99,605.44 × 40,343.52
  4. Step 4: Simplify right side
    72,174.48x = 4,018,434,060.75
  5. Step 5: Solve for x
    x = 4,018,434,060.75/72,174.48
  6. Step 6: Final answer
    x = 55,676.66

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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.