Home / 86,518.08-129,745.44-42,131.52

Finding the Fourth Proportional to 86,518.08, 129,745.44 and 42,131.52

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Solution

The fourth proportional to 86,518.08, 129,745.44 and 42,131.52 is: 63,181.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,518.08 : 129,745.44 = 42,131.52 : x
  2. Step 2: Convert to fraction form
    86,518.08/129,745.44 = 42,131.52/x
  3. Step 3: Cross multiply
    86,518.08x = 129,745.44 × 42,131.52
  4. Step 4: Simplify right side
    86,518.08x = 5,466,372,600.27
  5. Step 5: Solve for x
    x = 5,466,372,600.27/86,518.08
  6. Step 6: Final answer
    x = 63,181.85

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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.