Home / 72,177.44-99,610.14-40,344.30

Finding the Fourth Proportional to 72,177.44, 99,610.14 and 40,344.30

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Solution

The fourth proportional to 72,177.44, 99,610.14 and 40,344.30 is: 55,678.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.44 : 99,610.14 = 40,344.30 : x
  2. Step 2: Convert to fraction form
    72,177.44/99,610.14 = 40,344.30/x
  3. Step 3: Cross multiply
    72,177.44x = 99,610.14 × 40,344.30
  4. Step 4: Simplify right side
    72,177.44x = 4,018,701,371.20
  5. Step 5: Solve for x
    x = 4,018,701,371.20/72,177.44
  6. Step 6: Final answer
    x = 55,678.09

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1.5x scale

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.