Home / 85,850.40-128,781.38-29,695.94

Finding the Fourth Proportional to 85,850.40, 128,781.38 and 29,695.94

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Solution

The fourth proportional to 85,850.40, 128,781.38 and 29,695.94 is: 44,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850.40 : 128,781.38 = 29,695.94 : x
  2. Step 2: Convert to fraction form
    85,850.40/128,781.38 = 29,695.94/x
  3. Step 3: Cross multiply
    85,850.40x = 128,781.38 × 29,695.94
  4. Step 4: Simplify right side
    85,850.40x = 3,824,283,879.82
  5. Step 5: Solve for x
    x = 3,824,283,879.82/85,850.40
  6. Step 6: Final answer
    x = 44,545.90

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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.