Home / 66,538.38-99,777.44-19,142.58

Finding the Fourth Proportional to 66,538.38, 99,777.44 and 19,142.58

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Solution

The fourth proportional to 66,538.38, 99,777.44 and 19,142.58 is: 28,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,538.38 : 99,777.44 = 19,142.58 : x
  2. Step 2: Convert to fraction form
    66,538.38/99,777.44 = 19,142.58/x
  3. Step 3: Cross multiply
    66,538.38x = 99,777.44 × 19,142.58
  4. Step 4: Simplify right side
    66,538.38x = 1,909,997,627.40
  5. Step 5: Solve for x
    x = 1,909,997,627.40/66,538.38
  6. Step 6: Final answer
    x = 28,705.20

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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.