Home / 66,428,945.80-99,643,418.70-61,327,112.20

Finding the Fourth Proportional to 66,428,945.80, 99,643,418.70 and 61,327,112.20

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Solution

The fourth proportional to 66,428,945.80, 99,643,418.70 and 61,327,112.20 is: 91,990,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,945.80 : 99,643,418.70 = 61,327,112.20 : x
  2. Step 2: Convert to fraction form
    66,428,945.80/99,643,418.70 = 61,327,112.20/x
  3. Step 3: Cross multiply
    66,428,945.80x = 99,643,418.70 × 61,327,112.20
  4. Step 4: Simplify right side
    66,428,945.80x = 6,110,843,118,606,479
  5. Step 5: Solve for x
    x = 6,110,843,118,606,479/66,428,945.80
  6. Step 6: Final answer
    x = 91,990,668.30

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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.