Home / 85,906.42-128,828.76-29,731.29

Finding the Fourth Proportional to 85,906.42, 128,828.76 and 29,731.29

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Solution

The fourth proportional to 85,906.42, 128,828.76 and 29,731.29 is: 44,586.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,906.42 : 128,828.76 = 29,731.29 : x
  2. Step 2: Convert to fraction form
    85,906.42/128,828.76 = 29,731.29/x
  3. Step 3: Cross multiply
    85,906.42x = 128,828.76 × 29,731.29
  4. Step 4: Simplify right side
    85,906.42x = 3,830,245,223.90
  5. Step 5: Solve for x
    x = 3,830,245,223.90/85,906.42
  6. Step 6: Final answer
    x = 44,586.25

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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.