Home / 77,892.05-116,838.08-18,727.72

Finding the Fourth Proportional to 77,892.05, 116,838.08 and 18,727.72

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Solution

The fourth proportional to 77,892.05, 116,838.08 and 18,727.72 is: 28,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,892.05 : 116,838.08 = 18,727.72 : x
  2. Step 2: Convert to fraction form
    77,892.05/116,838.08 = 18,727.72/x
  3. Step 3: Cross multiply
    77,892.05x = 116,838.08 × 18,727.72
  4. Step 4: Simplify right side
    77,892.05x = 2,188,110,753.94
  5. Step 5: Solve for x
    x = 2,188,110,753.94/77,892.05
  6. Step 6: Final answer
    x = 28,091.58

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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.