Home / 78,003,021.70-117,004,532.55-55,328,205.70

Finding the Fourth Proportional to 78,003,021.70, 117,004,532.55 and 55,328,205.70

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Solution

The fourth proportional to 78,003,021.70, 117,004,532.55 and 55,328,205.70 is: 82,992,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,021.70 : 117,004,532.55 = 55,328,205.70 : x
  2. Step 2: Convert to fraction form
    78,003,021.70/117,004,532.55 = 55,328,205.70/x
  3. Step 3: Cross multiply
    78,003,021.70x = 117,004,532.55 × 55,328,205.70
  4. Step 4: Simplify right side
    78,003,021.70x = 6,473,650,844,758,746
  5. Step 5: Solve for x
    x = 6,473,650,844,758,746/78,003,021.70
  6. Step 6: Final answer
    x = 82,992,308.55

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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.