Home / 85,588.13-128,350.70-29,412.29

Finding the Fourth Proportional to 85,588.13, 128,350.70 and 29,412.29

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Solution

The fourth proportional to 85,588.13, 128,350.70 and 29,412.29 is: 44,107.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,588.13 : 128,350.70 = 29,412.29 : x
  2. Step 2: Convert to fraction form
    85,588.13/128,350.70 = 29,412.29/x
  3. Step 3: Cross multiply
    85,588.13x = 128,350.70 × 29,412.29
  4. Step 4: Simplify right side
    85,588.13x = 3,775,087,221.29
  5. Step 5: Solve for x
    x = 3,775,087,221.29/85,588.13
  6. Step 6: Final answer
    x = 44,107.61

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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.