Home / 77,139.60-115,726.32-32,804.28

Finding the Fourth Proportional to 77,139.60, 115,726.32 and 32,804.28

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Solution

The fourth proportional to 77,139.60, 115,726.32 and 32,804.28 is: 49,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,139.60 : 115,726.32 = 32,804.28 : x
  2. Step 2: Convert to fraction form
    77,139.60/115,726.32 = 32,804.28/x
  3. Step 3: Cross multiply
    77,139.60x = 115,726.32 × 32,804.28
  4. Step 4: Simplify right side
    77,139.60x = 3,796,318,604.65
  5. Step 5: Solve for x
    x = 3,796,318,604.65/77,139.60
  6. Step 6: Final answer
    x = 49,213.62

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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.