Home / 86,255.28-129,481.34-57,813.35

Finding the Fourth Proportional to 86,255.28, 129,481.34 and 57,813.35

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Solution

The fourth proportional to 86,255.28, 129,481.34 and 57,813.35 is: 86,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,255.28 : 129,481.34 = 57,813.35 : x
  2. Step 2: Convert to fraction form
    86,255.28/129,481.34 = 57,813.35/x
  3. Step 3: Cross multiply
    86,255.28x = 129,481.34 × 57,813.35
  4. Step 4: Simplify right side
    86,255.28x = 7,485,749,091.42
  5. Step 5: Solve for x
    x = 7,485,749,091.42/86,255.28
  6. Step 6: Final answer
    x = 86,785.98

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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.