Home / 90,991,842.72-136,487,764.56-30,407,568.80

Finding the Fourth Proportional to 90,991,842.72, 136,487,764.56 and 30,407,568.80

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Solution

The fourth proportional to 90,991,842.72, 136,487,764.56 and 30,407,568.80 is: 45,611,353.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991,842.72 : 136,487,764.56 = 30,407,568.80 : x
  2. Step 2: Convert to fraction form
    90,991,842.72/136,487,764.56 = 30,407,568.80/x
  3. Step 3: Cross multiply
    90,991,842.72x = 136,487,764.56 × 30,407,568.80
  4. Step 4: Simplify right side
    90,991,842.72x = 4,150,261,091,216,402
  5. Step 5: Solve for x
    x = 4,150,261,091,216,402/90,991,842.72
  6. Step 6: Final answer
    x = 45,611,353.36

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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.