Home / 85,481.40-128,236.02-26,317.08

Finding the Fourth Proportional to 85,481.40, 128,236.02 and 26,317.08

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Solution

The fourth proportional to 85,481.40, 128,236.02 and 26,317.08 is: 39,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,481.40 : 128,236.02 = 26,317.08 : x
  2. Step 2: Convert to fraction form
    85,481.40/128,236.02 = 26,317.08/x
  3. Step 3: Cross multiply
    85,481.40x = 128,236.02 × 26,317.08
  4. Step 4: Simplify right side
    85,481.40x = 3,374,797,597.22
  5. Step 5: Solve for x
    x = 3,374,797,597.22/85,481.40
  6. Step 6: Final answer
    x = 39,479.91

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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.