Home / 75,561,720.12-113,343,215.10-20,978,561.76

Finding the Fourth Proportional to 75,561,720.12, 113,343,215.10 and 20,978,561.76

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Solution

The fourth proportional to 75,561,720.12, 113,343,215.10 and 20,978,561.76 is: 31,468,018.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,561,720.12 : 113,343,215.10 = 20,978,561.76 : x
  2. Step 2: Convert to fraction form
    75,561,720.12/113,343,215.10 = 20,978,561.76/x
  3. Step 3: Cross multiply
    75,561,720.12x = 113,343,215.10 × 20,978,561.76
  4. Step 4: Simplify right side
    75,561,720.12x = 2,377,777,638,052,314.50
  5. Step 5: Solve for x
    x = 2,377,777,638,052,314.50/75,561,720.12
  6. Step 6: Final answer
    x = 31,468,018.92

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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.