Home / 65,631.36-98,362.80-57,163.20

Finding the Fourth Proportional to 65,631.36, 98,362.80 and 57,163.20

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Solution

The fourth proportional to 65,631.36, 98,362.80 and 57,163.20 is: 85,671.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,631.36 : 98,362.80 = 57,163.20 : x
  2. Step 2: Convert to fraction form
    65,631.36/98,362.80 = 57,163.20/x
  3. Step 3: Cross multiply
    65,631.36x = 98,362.80 × 57,163.20
  4. Step 4: Simplify right side
    65,631.36x = 5,622,732,408.96
  5. Step 5: Solve for x
    x = 5,622,732,408.96/65,631.36
  6. Step 6: Final answer
    x = 85,671.43

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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.