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Finding the Fourth Proportional to 78,792.57, 118,210.73 and 33,220.35

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Solution

The fourth proportional to 78,792.57, 118,210.73 and 33,220.35 is: 49,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,792.57 : 118,210.73 = 33,220.35 : x
  2. Step 2: Convert to fraction form
    78,792.57/118,210.73 = 33,220.35/x
  3. Step 3: Cross multiply
    78,792.57x = 118,210.73 × 33,220.35
  4. Step 4: Simplify right side
    78,792.57x = 3,927,001,658.25
  5. Step 5: Solve for x
    x = 3,927,001,658.25/78,792.57
  6. Step 6: Final answer
    x = 49,839.75

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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.