Home / 55,857.92-77,087.04-30,712.64

Finding the Fourth Proportional to 55,857.92, 77,087.04 and 30,712.64

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Solution

The fourth proportional to 55,857.92, 77,087.04 and 30,712.64 is: 42,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,857.92 : 77,087.04 = 30,712.64 : x
  2. Step 2: Convert to fraction form
    55,857.92/77,087.04 = 30,712.64/x
  3. Step 3: Cross multiply
    55,857.92x = 77,087.04 × 30,712.64
  4. Step 4: Simplify right side
    55,857.92x = 2,367,546,508.19
  5. Step 5: Solve for x
    x = 2,367,546,508.19/55,857.92
  6. Step 6: Final answer
    x = 42,385.15

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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.