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Finding the Fourth Proportional to 66,510.41, 91,795.76 and 63,520.97

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Solution

The fourth proportional to 66,510.41, 91,795.76 and 63,520.97 is: 87,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.41 : 91,795.76 = 63,520.97 : x
  2. Step 2: Convert to fraction form
    66,510.41/91,795.76 = 63,520.97/x
  3. Step 3: Cross multiply
    66,510.41x = 91,795.76 × 63,520.97
  4. Step 4: Simplify right side
    66,510.41x = 5,830,954,940.50
  5. Step 5: Solve for x
    x = 5,830,954,940.50/66,510.41
  6. Step 6: Final answer
    x = 87,669.82

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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.