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Finding the Fourth Proportional to 86,323.94, 119,159.42 and 63,843.85

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Solution

The fourth proportional to 86,323.94, 119,159.42 and 63,843.85 is: 88,128.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,323.94 : 119,159.42 = 63,843.85 : x
  2. Step 2: Convert to fraction form
    86,323.94/119,159.42 = 63,843.85/x
  3. Step 3: Cross multiply
    86,323.94x = 119,159.42 × 63,843.85
  4. Step 4: Simplify right side
    86,323.94x = 7,607,596,136.57
  5. Step 5: Solve for x
    x = 7,607,596,136.57/86,323.94
  6. Step 6: Final answer
    x = 88,128.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.