Home / 90,558,155.72-125,047,929.85-87,629,801.91

Finding the Fourth Proportional to 90,558,155.72, 125,047,929.85 and 87,629,801.91

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Solution

The fourth proportional to 90,558,155.72, 125,047,929.85 and 87,629,801.91 is: 121,004,289.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,558,155.72 : 125,047,929.85 = 87,629,801.91 : x
  2. Step 2: Convert to fraction form
    90,558,155.72/125,047,929.85 = 87,629,801.91/x
  3. Step 3: Cross multiply
    90,558,155.72x = 125,047,929.85 × 87,629,801.91
  4. Step 4: Simplify right side
    90,558,155.72x = 10,957,925,321,815,552
  5. Step 5: Solve for x
    x = 10,957,925,321,815,552/90,558,155.72
  6. Step 6: Final answer
    x = 121,004,289.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.