Home / 83,622,609.70-125,433,914.55-66,403,921.30

Finding the Fourth Proportional to 83,622,609.70, 125,433,914.55 and 66,403,921.30

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Solution

The fourth proportional to 83,622,609.70, 125,433,914.55 and 66,403,921.30 is: 99,605,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,622,609.70 : 125,433,914.55 = 66,403,921.30 : x
  2. Step 2: Convert to fraction form
    83,622,609.70/125,433,914.55 = 66,403,921.30/x
  3. Step 3: Cross multiply
    83,622,609.70x = 125,433,914.55 × 66,403,921.30
  4. Step 4: Simplify right side
    83,622,609.70x = 8,329,303,790,129,124
  5. Step 5: Solve for x
    x = 8,329,303,790,129,124/83,622,609.70
  6. Step 6: Final answer
    x = 99,605,881.95

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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.