Home / 85,945.44-128,921.68-40,943.68

Finding the Fourth Proportional to 85,945.44, 128,921.68 and 40,943.68

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Solution

The fourth proportional to 85,945.44, 128,921.68 and 40,943.68 is: 61,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,945.44 : 128,921.68 = 40,943.68 : x
  2. Step 2: Convert to fraction form
    85,945.44/128,921.68 = 40,943.68/x
  3. Step 3: Cross multiply
    85,945.44x = 128,921.68 × 40,943.68
  4. Step 4: Simplify right side
    85,945.44x = 5,278,528,010.98
  5. Step 5: Solve for x
    x = 5,278,528,010.98/85,945.44
  6. Step 6: Final answer
    x = 61,417.20

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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.