Home / 78,941,478.35-108,933,709.83-45,899,383.30

Finding the Fourth Proportional to 78,941,478.35, 108,933,709.83 and 45,899,383.30

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Solution

The fourth proportional to 78,941,478.35, 108,933,709.83 and 45,899,383.30 is: 63,337,933.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941,478.35 : 108,933,709.83 = 45,899,383.30 : x
  2. Step 2: Convert to fraction form
    78,941,478.35/108,933,709.83 = 45,899,383.30/x
  3. Step 3: Cross multiply
    78,941,478.35x = 108,933,709.83 × 45,899,383.30
  4. Step 4: Simplify right side
    78,941,478.35x = 4,999,990,101,333,691
  5. Step 5: Solve for x
    x = 4,999,990,101,333,691/78,941,478.35
  6. Step 6: Final answer
    x = 63,337,933.44

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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.