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Finding the Fourth Proportional to 66,366.74, 91,675.69 and 53,031.54

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Solution

The fourth proportional to 66,366.74, 91,675.69 and 53,031.54 is: 73,255.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.74 : 91,675.69 = 53,031.54 : x
  2. Step 2: Convert to fraction form
    66,366.74/91,675.69 = 53,031.54/x
  3. Step 3: Cross multiply
    66,366.74x = 91,675.69 × 53,031.54
  4. Step 4: Simplify right side
    66,366.74x = 4,861,703,021.26
  5. Step 5: Solve for x
    x = 4,861,703,021.26/66,366.74
  6. Step 6: Final answer
    x = 73,255.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.