Home / 85,581.10-128,379.03-22,400.97

Finding the Fourth Proportional to 85,581.10, 128,379.03 and 22,400.97

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Solution

The fourth proportional to 85,581.10, 128,379.03 and 22,400.97 is: 33,603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,581.10 : 128,379.03 = 22,400.97 : x
  2. Step 2: Convert to fraction form
    85,581.10/128,379.03 = 22,400.97/x
  3. Step 3: Cross multiply
    85,581.10x = 128,379.03 × 22,400.97
  4. Step 4: Simplify right side
    85,581.10x = 2,875,814,799.66
  5. Step 5: Solve for x
    x = 2,875,814,799.66/85,581.10
  6. Step 6: Final answer
    x = 33,603.39

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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.