Home / 90,679,950.54-125,138,365.38-51,521,778.72

Finding the Fourth Proportional to 90,679,950.54, 125,138,365.38 and 51,521,778.72

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Solution

The fourth proportional to 90,679,950.54, 125,138,365.38 and 51,521,778.72 is: 71,100,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,679,950.54 : 125,138,365.38 = 51,521,778.72 : x
  2. Step 2: Convert to fraction form
    90,679,950.54/125,138,365.38 = 51,521,778.72/x
  3. Step 3: Cross multiply
    90,679,950.54x = 125,138,365.38 × 51,521,778.72
  4. Step 4: Simplify right side
    90,679,950.54x = 6,447,351,170,490,868
  5. Step 5: Solve for x
    x = 6,447,351,170,490,868/90,679,950.54
  6. Step 6: Final answer
    x = 71,100,073.74

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1.5x scale

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.