Home / 77,142.60-115,730.82-32,807.28

Finding the Fourth Proportional to 77,142.60, 115,730.82 and 32,807.28

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Solution

The fourth proportional to 77,142.60, 115,730.82 and 32,807.28 is: 49,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,142.60 : 115,730.82 = 32,807.28 : x
  2. Step 2: Convert to fraction form
    77,142.60/115,730.82 = 32,807.28/x
  3. Step 3: Cross multiply
    77,142.60x = 115,730.82 × 32,807.28
  4. Step 4: Simplify right side
    77,142.60x = 3,796,813,416.37
  5. Step 5: Solve for x
    x = 3,796,813,416.37/77,142.60
  6. Step 6: Final answer
    x = 49,218.12

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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.