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Finding the Fourth Proportional to 78,804,911.80, 118,207,367.72 and 48,571,823.80

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Solution

The fourth proportional to 78,804,911.80, 118,207,367.72 and 48,571,823.80 is: 72,857,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804,911.80 : 118,207,367.72 = 48,571,823.80 : x
  2. Step 2: Convert to fraction form
    78,804,911.80/118,207,367.72 = 48,571,823.80/x
  3. Step 3: Cross multiply
    78,804,911.80x = 118,207,367.72 × 48,571,823.80
  4. Step 4: Simplify right side
    78,804,911.80x = 5,741,547,436,757,647
  5. Step 5: Solve for x
    x = 5,741,547,436,757,647/78,804,911.80
  6. Step 6: Final answer
    x = 72,857,735.71

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Similar ratio
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1.5x scale

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.