Home / 81,465,863.10-122,198,794.65-47,028,486.30

Finding the Fourth Proportional to 81,465,863.10, 122,198,794.65 and 47,028,486.30

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Solution

The fourth proportional to 81,465,863.10, 122,198,794.65 and 47,028,486.30 is: 70,542,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,863.10 : 122,198,794.65 = 47,028,486.30 : x
  2. Step 2: Convert to fraction form
    81,465,863.10/122,198,794.65 = 47,028,486.30/x
  3. Step 3: Cross multiply
    81,465,863.10x = 122,198,794.65 × 47,028,486.30
  4. Step 4: Simplify right side
    81,465,863.10x = 5,746,824,340,074,038
  5. Step 5: Solve for x
    x = 5,746,824,340,074,038/81,465,863.10
  6. Step 6: Final answer
    x = 70,542,729.45

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Double scale
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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.