Home / 85,716.24-128,574.34-38,982.48

Finding the Fourth Proportional to 85,716.24, 128,574.34 and 38,982.48

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Solution

The fourth proportional to 85,716.24, 128,574.34 and 38,982.48 is: 58,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,716.24 : 128,574.34 = 38,982.48 : x
  2. Step 2: Convert to fraction form
    85,716.24/128,574.34 = 38,982.48/x
  3. Step 3: Cross multiply
    85,716.24x = 128,574.34 × 38,982.48
  4. Step 4: Simplify right side
    85,716.24x = 5,012,146,637.56
  5. Step 5: Solve for x
    x = 5,012,146,637.56/85,716.24
  6. Step 6: Final answer
    x = 58,473.71

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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.