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Finding the Fourth Proportional to 51,659.99, 77,489.99 and 20,495.24

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Solution

The fourth proportional to 51,659.99, 77,489.99 and 20,495.24 is: 30,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,659.99 : 77,489.99 = 20,495.24 : x
  2. Step 2: Convert to fraction form
    51,659.99/77,489.99 = 20,495.24/x
  3. Step 3: Cross multiply
    51,659.99x = 77,489.99 × 20,495.24
  4. Step 4: Simplify right side
    51,659.99x = 1,588,175,840.17
  5. Step 5: Solve for x
    x = 1,588,175,840.17/51,659.99
  6. Step 6: Final answer
    x = 30,742.86

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.