Home / 81,036,188.72-121,479,795.48-29,208,109.04

Finding the Fourth Proportional to 81,036,188.72, 121,479,795.48 and 29,208,109.04

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Solution

The fourth proportional to 81,036,188.72, 121,479,795.48 and 29,208,109.04 is: 43,785,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,036,188.72 : 121,479,795.48 = 29,208,109.04 : x
  2. Step 2: Convert to fraction form
    81,036,188.72/121,479,795.48 = 29,208,109.04/x
  3. Step 3: Cross multiply
    81,036,188.72x = 121,479,795.48 × 29,208,109.04
  4. Step 4: Simplify right side
    81,036,188.72x = 3,548,195,112,536,739
  5. Step 5: Solve for x
    x = 3,548,195,112,536,739/81,036,188.72
  6. Step 6: Final answer
    x = 43,785,315.78

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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.