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Finding the Fourth Proportional to 66,496.20, 91,798.59 and 51,354.87

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Solution

The fourth proportional to 66,496.20, 91,798.59 and 51,354.87 is: 70,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,496.20 : 91,798.59 = 51,354.87 : x
  2. Step 2: Convert to fraction form
    66,496.20/91,798.59 = 51,354.87/x
  3. Step 3: Cross multiply
    66,496.20x = 91,798.59 × 51,354.87
  4. Step 4: Simplify right side
    66,496.20x = 4,714,304,655.63
  5. Step 5: Solve for x
    x = 4,714,304,655.63/66,496.20
  6. Step 6: Final answer
    x = 70,895.85

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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.