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Finding the Fourth Proportional to 66,466.38, 91,754.19 and 57,355.50

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Solution

The fourth proportional to 66,466.38, 91,754.19 and 57,355.50 is: 79,176.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.38 : 91,754.19 = 57,355.50 : x
  2. Step 2: Convert to fraction form
    66,466.38/91,754.19 = 57,355.50/x
  3. Step 3: Cross multiply
    66,466.38x = 91,754.19 × 57,355.50
  4. Step 4: Simplify right side
    66,466.38x = 5,262,607,444.55
  5. Step 5: Solve for x
    x = 5,262,607,444.55/66,466.38
  6. Step 6: Final answer
    x = 79,176.98

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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.