Home / 85,496.12-128,257.95-26,331.77

Finding the Fourth Proportional to 85,496.12, 128,257.95 and 26,331.77

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Solution

The fourth proportional to 85,496.12, 128,257.95 and 26,331.77 is: 39,501.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,496.12 : 128,257.95 = 26,331.77 : x
  2. Step 2: Convert to fraction form
    85,496.12/128,257.95 = 26,331.77/x
  3. Step 3: Cross multiply
    85,496.12x = 128,257.95 × 26,331.77
  4. Step 4: Simplify right side
    85,496.12x = 3,377,258,198.78
  5. Step 5: Solve for x
    x = 3,377,258,198.78/85,496.12
  6. Step 6: Final answer
    x = 39,501.89

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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.