Home / 78,003,858.20-117,005,787.30-55,329,042.20

Finding the Fourth Proportional to 78,003,858.20, 117,005,787.30 and 55,329,042.20

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Solution

The fourth proportional to 78,003,858.20, 117,005,787.30 and 55,329,042.20 is: 82,993,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,858.20 : 117,005,787.30 = 55,329,042.20 : x
  2. Step 2: Convert to fraction form
    78,003,858.20/117,005,787.30 = 55,329,042.20/x
  3. Step 3: Cross multiply
    78,003,858.20x = 117,005,787.30 × 55,329,042.20
  4. Step 4: Simplify right side
    78,003,858.20x = 6,473,818,143,165,924
  5. Step 5: Solve for x
    x = 6,473,818,143,165,924/78,003,858.20
  6. Step 6: Final answer
    x = 82,993,563.30

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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.