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Finding the Fourth Proportional to 88,635.40, 132,629.10 and 65,307.40

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Solution

The fourth proportional to 88,635.40, 132,629.10 and 65,307.40 is: 97,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,635.40 : 132,629.10 = 65,307.40 : x
  2. Step 2: Convert to fraction form
    88,635.40/132,629.10 = 65,307.40/x
  3. Step 3: Cross multiply
    88,635.40x = 132,629.10 × 65,307.40
  4. Step 4: Simplify right side
    88,635.40x = 8,661,661,685.34
  5. Step 5: Solve for x
    x = 8,661,661,685.34/88,635.40
  6. Step 6: Final answer
    x = 97,722.37

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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.