Home / 85,961.40-128,950.84-29,788.61

Finding the Fourth Proportional to 85,961.40, 128,950.84 and 29,788.61

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Solution

The fourth proportional to 85,961.40, 128,950.84 and 29,788.61 is: 44,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,961.40 : 128,950.84 = 29,788.61 : x
  2. Step 2: Convert to fraction form
    85,961.40/128,950.84 = 29,788.61/x
  3. Step 3: Cross multiply
    85,961.40x = 128,950.84 × 29,788.61
  4. Step 4: Simplify right side
    85,961.40x = 3,841,266,232.20
  5. Step 5: Solve for x
    x = 3,841,266,232.20/85,961.40
  6. Step 6: Final answer
    x = 44,685.94

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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.