Home / 66,690.12-92,065.80-51,548.58

Finding the Fourth Proportional to 66,690.12, 92,065.80 and 51,548.58

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Solution

The fourth proportional to 66,690.12, 92,065.80 and 51,548.58 is: 71,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,690.12 : 92,065.80 = 51,548.58 : x
  2. Step 2: Convert to fraction form
    66,690.12/92,065.80 = 51,548.58/x
  3. Step 3: Cross multiply
    66,690.12x = 92,065.80 × 51,548.58
  4. Step 4: Simplify right side
    66,690.12x = 4,745,861,256.56
  5. Step 5: Solve for x
    x = 4,745,861,256.56/66,690.12
  6. Step 6: Final answer
    x = 71,162.88

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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.