Home / 81,206,651.40-121,809,977.10-62,074,775.40

Finding the Fourth Proportional to 81,206,651.40, 121,809,977.10 and 62,074,775.40

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Solution

The fourth proportional to 81,206,651.40, 121,809,977.10 and 62,074,775.40 is: 93,112,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,206,651.40 : 121,809,977.10 = 62,074,775.40 : x
  2. Step 2: Convert to fraction form
    81,206,651.40/121,809,977.10 = 62,074,775.40/x
  3. Step 3: Cross multiply
    81,206,651.40x = 121,809,977.10 × 62,074,775.40
  4. Step 4: Simplify right side
    81,206,651.40x = 7,561,326,969,961,643
  5. Step 5: Solve for x
    x = 7,561,326,969,961,643/81,206,651.40
  6. Step 6: Final answer
    x = 93,112,163.10

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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.