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Finding the Fourth Proportional to 66,782.88, 92,048.40 and 53,310.96

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Solution

The fourth proportional to 66,782.88, 92,048.40 and 53,310.96 is: 73,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,782.88 : 92,048.40 = 53,310.96 : x
  2. Step 2: Convert to fraction form
    66,782.88/92,048.40 = 53,310.96/x
  3. Step 3: Cross multiply
    66,782.88x = 92,048.40 × 53,310.96
  4. Step 4: Simplify right side
    66,782.88x = 4,907,188,570.46
  5. Step 5: Solve for x
    x = 4,907,188,570.46/66,782.88
  6. Step 6: Final answer
    x = 73,479.74

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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.