Home / 78,038.42-117,057.62-33,066.86

Finding the Fourth Proportional to 78,038.42, 117,057.62 and 33,066.86

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Solution

The fourth proportional to 78,038.42, 117,057.62 and 33,066.86 is: 49,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,038.42 : 117,057.62 = 33,066.86 : x
  2. Step 2: Convert to fraction form
    78,038.42/117,057.62 = 33,066.86/x
  3. Step 3: Cross multiply
    78,038.42x = 117,057.62 × 33,066.86
  4. Step 4: Simplify right side
    78,038.42x = 3,870,727,181.85
  5. Step 5: Solve for x
    x = 3,870,727,181.85/78,038.42
  6. Step 6: Final answer
    x = 49,600.28

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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.