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Finding the Fourth Proportional to 69,581.04, 104,172.90 and 65,167.08

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Solution

The fourth proportional to 69,581.04, 104,172.90 and 65,167.08 is: 97,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,581.04 : 104,172.90 = 65,167.08 : x
  2. Step 2: Convert to fraction form
    69,581.04/104,172.90 = 65,167.08/x
  3. Step 3: Cross multiply
    69,581.04x = 104,172.90 × 65,167.08
  4. Step 4: Simplify right side
    69,581.04x = 6,788,643,708.13
  5. Step 5: Solve for x
    x = 6,788,643,708.13/69,581.04
  6. Step 6: Final answer
    x = 97,564.56

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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.