Home / 85,910.40-128,834.70-29,735.25

Finding the Fourth Proportional to 85,910.40, 128,834.70 and 29,735.25

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Solution

The fourth proportional to 85,910.40, 128,834.70 and 29,735.25 is: 44,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,910.40 : 128,834.70 = 29,735.25 : x
  2. Step 2: Convert to fraction form
    85,910.40/128,834.70 = 29,735.25/x
  3. Step 3: Cross multiply
    85,910.40x = 128,834.70 × 29,735.25
  4. Step 4: Simplify right side
    85,910.40x = 3,830,932,013.18
  5. Step 5: Solve for x
    x = 3,830,932,013.18/85,910.40
  6. Step 6: Final answer
    x = 44,592.18

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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.