Home / 85,710.20-128,648.23-41,368.16

Finding the Fourth Proportional to 85,710.20, 128,648.23 and 41,368.16

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Solution

The fourth proportional to 85,710.20, 128,648.23 and 41,368.16 is: 62,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,710.20 : 128,648.23 = 41,368.16 : x
  2. Step 2: Convert to fraction form
    85,710.20/128,648.23 = 41,368.16/x
  3. Step 3: Cross multiply
    85,710.20x = 128,648.23 × 41,368.16
  4. Step 4: Simplify right side
    85,710.20x = 5,321,940,780.56
  5. Step 5: Solve for x
    x = 5,321,940,780.56/85,710.20
  6. Step 6: Final answer
    x = 62,092.27

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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.