Home / 81,005,739.97-111,775,895.74-49,199,358.11

Finding the Fourth Proportional to 81,005,739.97, 111,775,895.74 and 49,199,358.11

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Solution

The fourth proportional to 81,005,739.97, 111,775,895.74 and 49,199,358.11 is: 67,887,810.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005,739.97 : 111,775,895.74 = 49,199,358.11 : x
  2. Step 2: Convert to fraction form
    81,005,739.97/111,775,895.74 = 49,199,358.11/x
  3. Step 3: Cross multiply
    81,005,739.97x = 111,775,895.74 × 49,199,358.11
  4. Step 4: Simplify right side
    81,005,739.97x = 5,499,302,322,709,642
  5. Step 5: Solve for x
    x = 5,499,302,322,709,642/81,005,739.97
  6. Step 6: Final answer
    x = 67,887,810.48

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1.5x scale

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.