Home / 85,755.41-128,646.75-26,578.83

Finding the Fourth Proportional to 85,755.41, 128,646.75 and 26,578.83

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Solution

The fourth proportional to 85,755.41, 128,646.75 and 26,578.83 is: 39,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755.41 : 128,646.75 = 26,578.83 : x
  2. Step 2: Convert to fraction form
    85,755.41/128,646.75 = 26,578.83/x
  3. Step 3: Cross multiply
    85,755.41x = 128,646.75 × 26,578.83
  4. Step 4: Simplify right side
    85,755.41x = 3,419,280,530.89
  5. Step 5: Solve for x
    x = 3,419,280,530.89/85,755.41
  6. Step 6: Final answer
    x = 39,872.48

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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.