Home / 77,140.10-115,687.47-32,766.50

Finding the Fourth Proportional to 77,140.10, 115,687.47 and 32,766.50

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Solution

The fourth proportional to 77,140.10, 115,687.47 and 32,766.50 is: 49,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,140.10 : 115,687.47 = 32,766.50 : x
  2. Step 2: Convert to fraction form
    77,140.10/115,687.47 = 32,766.50/x
  3. Step 3: Cross multiply
    77,140.10x = 115,687.47 × 32,766.50
  4. Step 4: Simplify right side
    77,140.10x = 3,790,673,485.76
  5. Step 5: Solve for x
    x = 3,790,673,485.76/77,140.10
  6. Step 6: Final answer
    x = 49,140.12

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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.