Home / 65,139.04-97,715.64-20,755.36

Finding the Fourth Proportional to 65,139.04, 97,715.64 and 20,755.36

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Solution

The fourth proportional to 65,139.04, 97,715.64 and 20,755.36 is: 31,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.04 : 97,715.64 = 20,755.36 : x
  2. Step 2: Convert to fraction form
    65,139.04/97,715.64 = 20,755.36/x
  3. Step 3: Cross multiply
    65,139.04x = 97,715.64 × 20,755.36
  4. Step 4: Simplify right side
    65,139.04x = 2,028,123,285.83
  5. Step 5: Solve for x
    x = 2,028,123,285.83/65,139.04
  6. Step 6: Final answer
    x = 31,135.30

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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.