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Finding the Fourth Proportional to 66,495.20, 91,797.21 and 51,353.87

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Solution

The fourth proportional to 66,495.20, 91,797.21 and 51,353.87 is: 70,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,495.20 : 91,797.21 = 51,353.87 : x
  2. Step 2: Convert to fraction form
    66,495.20/91,797.21 = 51,353.87/x
  3. Step 3: Cross multiply
    66,495.20x = 91,797.21 × 51,353.87
  4. Step 4: Simplify right side
    66,495.20x = 4,714,141,529.72
  5. Step 5: Solve for x
    x = 4,714,141,529.72/66,495.20
  6. Step 6: Final answer
    x = 70,894.47

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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.