Home / 78,003,472.70-117,005,209.05-55,328,656.70

Finding the Fourth Proportional to 78,003,472.70, 117,005,209.05 and 55,328,656.70

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Solution

The fourth proportional to 78,003,472.70, 117,005,209.05 and 55,328,656.70 is: 82,992,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,472.70 : 117,005,209.05 = 55,328,656.70 : x
  2. Step 2: Convert to fraction form
    78,003,472.70/117,005,209.05 = 55,328,656.70/x
  3. Step 3: Cross multiply
    78,003,472.70x = 117,005,209.05 × 55,328,656.70
  4. Step 4: Simplify right side
    78,003,472.70x = 6,473,741,043,639,183
  5. Step 5: Solve for x
    x = 6,473,741,043,639,183/78,003,472.70
  6. Step 6: Final answer
    x = 82,992,985.05

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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.