Home / 40,011,132.81-55,215,419.30-21,676,418.31

Finding the Fourth Proportional to 40,011,132.81, 55,215,419.30 and 21,676,418.31

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Solution

The fourth proportional to 40,011,132.81, 55,215,419.30 and 21,676,418.31 is: 29,913,487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,132.81 : 55,215,419.30 = 21,676,418.31 : x
  2. Step 2: Convert to fraction form
    40,011,132.81/55,215,419.30 = 21,676,418.31/x
  3. Step 3: Cross multiply
    40,011,132.81x = 55,215,419.30 × 21,676,418.31
  4. Step 4: Simplify right side
    40,011,132.81x = 1,196,872,525,524,388.25
  5. Step 5: Solve for x
    x = 1,196,872,525,524,388.25/40,011,132.81
  6. Step 6: Final answer
    x = 29,913,487.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.