Home / 43,638,049.12-65,442,901.92-20,605,420.48

Finding the Fourth Proportional to 43,638,049.12, 65,442,901.92 and 20,605,420.48

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Solution

The fourth proportional to 43,638,049.12, 65,442,901.92 and 20,605,420.48 is: 30,901,438.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,638,049.12 : 65,442,901.92 = 20,605,420.48 : x
  2. Step 2: Convert to fraction form
    43,638,049.12/65,442,901.92 = 20,605,420.48/x
  3. Step 3: Cross multiply
    43,638,049.12x = 65,442,901.92 × 20,605,420.48
  4. Step 4: Simplify right side
    43,638,049.12x = 1,348,478,511,492,999.50
  5. Step 5: Solve for x
    x = 1,348,478,511,492,999.50/43,638,049.12
  6. Step 6: Final answer
    x = 30,901,438.97

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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.