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Finding the Fourth Proportional to 78,698.26, 118,047.12 and 36,572.86

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Solution

The fourth proportional to 78,698.26, 118,047.12 and 36,572.86 is: 54,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,698.26 : 118,047.12 = 36,572.86 : x
  2. Step 2: Convert to fraction form
    78,698.26/118,047.12 = 36,572.86/x
  3. Step 3: Cross multiply
    78,698.26x = 118,047.12 × 36,572.86
  4. Step 4: Simplify right side
    78,698.26x = 4,317,320,793.16
  5. Step 5: Solve for x
    x = 4,317,320,793.16/78,698.26
  6. Step 6: Final answer
    x = 54,859.16

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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.