Home / 81,486,020.20-122,229,030.30-20,901,746.20

Finding the Fourth Proportional to 81,486,020.20, 122,229,030.30 and 20,901,746.20

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Solution

The fourth proportional to 81,486,020.20, 122,229,030.30 and 20,901,746.20 is: 31,352,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,486,020.20 : 122,229,030.30 = 20,901,746.20 : x
  2. Step 2: Convert to fraction form
    81,486,020.20/122,229,030.30 = 20,901,746.20/x
  3. Step 3: Cross multiply
    81,486,020.20x = 122,229,030.30 × 20,901,746.20
  4. Step 4: Simplify right side
    81,486,020.20x = 2,554,800,169,602,709.50
  5. Step 5: Solve for x
    x = 2,554,800,169,602,709.50/81,486,020.20
  6. Step 6: Final answer
    x = 31,352,619.30

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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.