Home / 81,869,742.72-122,608,833.84-47,221,108.20

Finding the Fourth Proportional to 81,869,742.72, 122,608,833.84 and 47,221,108.20

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Solution

The fourth proportional to 81,869,742.72, 122,608,833.84 and 47,221,108.20 is: 70,718,739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,869,742.72 : 122,608,833.84 = 47,221,108.20 : x
  2. Step 2: Convert to fraction form
    81,869,742.72/122,608,833.84 = 47,221,108.20/x
  3. Step 3: Cross multiply
    81,869,742.72x = 122,608,833.84 × 47,221,108.20
  4. Step 4: Simplify right side
    81,869,742.72x = 5,789,725,009,034,462
  5. Step 5: Solve for x
    x = 5,789,725,009,034,462/81,869,742.72
  6. Step 6: Final answer
    x = 70,718,739.51

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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.