Home / 90,991,278.75-136,486,918.13-30,407,004.75

Finding the Fourth Proportional to 90,991,278.75, 136,486,918.13 and 30,407,004.75

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Solution

The fourth proportional to 90,991,278.75, 136,486,918.13 and 30,407,004.75 is: 45,610,507.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991,278.75 : 136,486,918.13 = 30,407,004.75 : x
  2. Step 2: Convert to fraction form
    90,991,278.75/136,486,918.13 = 30,407,004.75/x
  3. Step 3: Cross multiply
    90,991,278.75x = 136,486,918.13 × 30,407,004.75
  4. Step 4: Simplify right side
    90,991,278.75x = 4,150,158,367,739,736
  5. Step 5: Solve for x
    x = 4,150,158,367,739,736/90,991,278.75
  6. Step 6: Final answer
    x = 45,610,507.13

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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.