Home / 45,361.02-68,018.10-20,379.72

Finding the Fourth Proportional to 45,361.02, 68,018.10 and 20,379.72

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Solution

The fourth proportional to 45,361.02, 68,018.10 and 20,379.72 is: 30,559.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,361.02 : 68,018.10 = 20,379.72 : x
  2. Step 2: Convert to fraction form
    45,361.02/68,018.10 = 20,379.72/x
  3. Step 3: Cross multiply
    45,361.02x = 68,018.10 × 20,379.72
  4. Step 4: Simplify right side
    45,361.02x = 1,386,189,832.93
  5. Step 5: Solve for x
    x = 1,386,189,832.93/45,361.02
  6. Step 6: Final answer
    x = 30,559.05

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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.