Home / 45,428,863.80-68,143,295.70-21,159,724.80

Finding the Fourth Proportional to 45,428,863.80, 68,143,295.70 and 21,159,724.80

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Solution

The fourth proportional to 45,428,863.80, 68,143,295.70 and 21,159,724.80 is: 31,739,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,428,863.80 : 68,143,295.70 = 21,159,724.80 : x
  2. Step 2: Convert to fraction form
    45,428,863.80/68,143,295.70 = 21,159,724.80/x
  3. Step 3: Cross multiply
    45,428,863.80x = 68,143,295.70 × 21,159,724.80
  4. Step 4: Simplify right side
    45,428,863.80x = 1,441,893,383,977,023.50
  5. Step 5: Solve for x
    x = 1,441,893,383,977,023.50/45,428,863.80
  6. Step 6: Final answer
    x = 31,739,587.20

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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.