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Finding the Fourth Proportional to 65,580.60, 98,474.58 and 51,791.16

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Solution

The fourth proportional to 65,580.60, 98,474.58 and 51,791.16 is: 77,768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,580.60 : 98,474.58 = 51,791.16 : x
  2. Step 2: Convert to fraction form
    65,580.60/98,474.58 = 51,791.16/x
  3. Step 3: Cross multiply
    65,580.60x = 98,474.58 × 51,791.16
  4. Step 4: Simplify right side
    65,580.60x = 5,100,112,728.71
  5. Step 5: Solve for x
    x = 5,100,112,728.71/65,580.60
  6. Step 6: Final answer
    x = 77,768.62

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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.