Home / 85,918.56-128,879.30-29,760.33

Finding the Fourth Proportional to 85,918.56, 128,879.30 and 29,760.33

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Solution

The fourth proportional to 85,918.56, 128,879.30 and 29,760.33 is: 44,641.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,918.56 : 128,879.30 = 29,760.33 : x
  2. Step 2: Convert to fraction form
    85,918.56/128,879.30 = 29,760.33/x
  3. Step 3: Cross multiply
    85,918.56x = 128,879.30 × 29,760.33
  4. Step 4: Simplify right side
    85,918.56x = 3,835,490,498.17
  5. Step 5: Solve for x
    x = 3,835,490,498.17/85,918.56
  6. Step 6: Final answer
    x = 44,641.00

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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.