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Finding the Fourth Proportional to 65,879.97, 98,764.56 and 53,368.98

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Solution

The fourth proportional to 65,879.97, 98,764.56 and 53,368.98 is: 80,008.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,879.97 : 98,764.56 = 53,368.98 : x
  2. Step 2: Convert to fraction form
    65,879.97/98,764.56 = 53,368.98/x
  3. Step 3: Cross multiply
    65,879.97x = 98,764.56 × 53,368.98
  4. Step 4: Simplify right side
    65,879.97x = 5,270,963,827.35
  5. Step 5: Solve for x
    x = 5,270,963,827.35/65,879.97
  6. Step 6: Final answer
    x = 80,008.59

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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.