Home / 85,581.73-128,341.16-29,405.90

Finding the Fourth Proportional to 85,581.73, 128,341.16 and 29,405.90

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Solution

The fourth proportional to 85,581.73, 128,341.16 and 29,405.90 is: 44,098.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,581.73 : 128,341.16 = 29,405.90 : x
  2. Step 2: Convert to fraction form
    85,581.73/128,341.16 = 29,405.90/x
  3. Step 3: Cross multiply
    85,581.73x = 128,341.16 × 29,405.90
  4. Step 4: Simplify right side
    85,581.73x = 3,773,987,600.94
  5. Step 5: Solve for x
    x = 3,773,987,600.94/85,581.73
  6. Step 6: Final answer
    x = 44,098.05

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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.