Home / 66,789.12-92,148.12-38,490.96

Finding the Fourth Proportional to 66,789.12, 92,148.12 and 38,490.96

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Solution

The fourth proportional to 66,789.12, 92,148.12 and 38,490.96 is: 53,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,789.12 : 92,148.12 = 38,490.96 : x
  2. Step 2: Convert to fraction form
    66,789.12/92,148.12 = 38,490.96/x
  3. Step 3: Cross multiply
    66,789.12x = 92,148.12 × 38,490.96
  4. Step 4: Simplify right side
    66,789.12x = 3,546,869,601.00
  5. Step 5: Solve for x
    x = 3,546,869,601.00/66,789.12
  6. Step 6: Final answer
    x = 53,105.50

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1.5x scale

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.