Home / 85,517.65-128,110.37-41,175.51

Finding the Fourth Proportional to 85,517.65, 128,110.37 and 41,175.51

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Solution

The fourth proportional to 85,517.65, 128,110.37 and 41,175.51 is: 61,683.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.65 : 128,110.37 = 41,175.51 : x
  2. Step 2: Convert to fraction form
    85,517.65/128,110.37 = 41,175.51/x
  3. Step 3: Cross multiply
    85,517.65x = 128,110.37 × 41,175.51
  4. Step 4: Simplify right side
    85,517.65x = 5,275,009,615.16
  5. Step 5: Solve for x
    x = 5,275,009,615.16/85,517.65
  6. Step 6: Final answer
    x = 61,683.29

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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.