Home / 78,228.92-107,916-49,500.02

Finding the Fourth Proportional to 78,228.92, 107,916 and 49,500.02

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Solution

The fourth proportional to 78,228.92, 107,916 and 49,500.02 is: 68,284.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,228.92 : 107,916 = 49,500.02 : x
  2. Step 2: Convert to fraction form
    78,228.92/107,916 = 49,500.02/x
  3. Step 3: Cross multiply
    78,228.92x = 107,916 × 49,500.02
  4. Step 4: Simplify right side
    78,228.92x = 5,341,844,158.32
  5. Step 5: Solve for x
    x = 5,341,844,158.32/78,228.92
  6. Step 6: Final answer
    x = 68,284.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.