Home / 72,177.77-99,610.73-40,344.77

Finding the Fourth Proportional to 72,177.77, 99,610.73 and 40,344.77

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Solution

The fourth proportional to 72,177.77, 99,610.73 and 40,344.77 is: 55,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.77 : 99,610.73 = 40,344.77 : x
  2. Step 2: Convert to fraction form
    72,177.77/99,610.73 = 40,344.77/x
  3. Step 3: Cross multiply
    72,177.77x = 99,610.73 × 40,344.77
  4. Step 4: Simplify right side
    72,177.77x = 4,018,771,991.38
  5. Step 5: Solve for x
    x = 4,018,771,991.38/72,177.77
  6. Step 6: Final answer
    x = 55,678.81

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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.