Home / 78,744.32-108,665.20-42,935.03

Finding the Fourth Proportional to 78,744.32, 108,665.20 and 42,935.03

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Solution

The fourth proportional to 78,744.32, 108,665.20 and 42,935.03 is: 59,249.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.32 : 108,665.20 = 42,935.03 : x
  2. Step 2: Convert to fraction form
    78,744.32/108,665.20 = 42,935.03/x
  3. Step 3: Cross multiply
    78,744.32x = 108,665.20 × 42,935.03
  4. Step 4: Simplify right side
    78,744.32x = 4,665,543,621.96
  5. Step 5: Solve for x
    x = 4,665,543,621.96/78,744.32
  6. Step 6: Final answer
    x = 59,249.27

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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.