Home / 78,003,760.20-117,005,640.30-55,328,944.20

Finding the Fourth Proportional to 78,003,760.20, 117,005,640.30 and 55,328,944.20

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Solution

The fourth proportional to 78,003,760.20, 117,005,640.30 and 55,328,944.20 is: 82,993,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,760.20 : 117,005,640.30 = 55,328,944.20 : x
  2. Step 2: Convert to fraction form
    78,003,760.20/117,005,640.30 = 55,328,944.20/x
  3. Step 3: Cross multiply
    78,003,760.20x = 117,005,640.30 × 55,328,944.20
  4. Step 4: Simplify right side
    78,003,760.20x = 6,473,798,543,243,971
  5. Step 5: Solve for x
    x = 6,473,798,543,243,971/78,003,760.20
  6. Step 6: Final answer
    x = 82,993,416.30

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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.