Home / 90,679,936.28-125,138,345.72-51,521,764.46

Finding the Fourth Proportional to 90,679,936.28, 125,138,345.72 and 51,521,764.46

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Solution

The fourth proportional to 90,679,936.28, 125,138,345.72 and 51,521,764.46 is: 71,100,054.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,679,936.28 : 125,138,345.72 = 51,521,764.46 : x
  2. Step 2: Convert to fraction form
    90,679,936.28/125,138,345.72 = 51,521,764.46/x
  3. Step 3: Cross multiply
    90,679,936.28x = 125,138,345.72 × 51,521,764.46
  4. Step 4: Simplify right side
    90,679,936.28x = 6,447,348,372,216,589
  5. Step 5: Solve for x
    x = 6,447,348,372,216,589/90,679,936.28
  6. Step 6: Final answer
    x = 71,100,054.07

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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.