Home / 74,661.55-111,990.94-18,501.78

Finding the Fourth Proportional to 74,661.55, 111,990.94 and 18,501.78

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Solution

The fourth proportional to 74,661.55, 111,990.94 and 18,501.78 is: 27,752.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,661.55 : 111,990.94 = 18,501.78 : x
  2. Step 2: Convert to fraction form
    74,661.55/111,990.94 = 18,501.78/x
  3. Step 3: Cross multiply
    74,661.55x = 111,990.94 × 18,501.78
  4. Step 4: Simplify right side
    74,661.55x = 2,072,031,733.87
  5. Step 5: Solve for x
    x = 2,072,031,733.87/74,661.55
  6. Step 6: Final answer
    x = 27,752.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.