Home / 85,910.65-128,835.07-29,735.50

Finding the Fourth Proportional to 85,910.65, 128,835.07 and 29,735.50

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Solution

The fourth proportional to 85,910.65, 128,835.07 and 29,735.50 is: 44,592.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,910.65 : 128,835.07 = 29,735.50 : x
  2. Step 2: Convert to fraction form
    85,910.65/128,835.07 = 29,735.50/x
  3. Step 3: Cross multiply
    85,910.65x = 128,835.07 × 29,735.50
  4. Step 4: Simplify right side
    85,910.65x = 3,830,975,223.99
  5. Step 5: Solve for x
    x = 3,830,975,223.99/85,910.65
  6. Step 6: Final answer
    x = 44,592.55

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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.