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Finding the Fourth Proportional to 86,393.61, 119,214.59 and 63,744.93

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Solution

The fourth proportional to 86,393.61, 119,214.59 and 63,744.93 is: 87,961.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,393.61 : 119,214.59 = 63,744.93 : x
  2. Step 2: Convert to fraction form
    86,393.61/119,214.59 = 63,744.93/x
  3. Step 3: Cross multiply
    86,393.61x = 119,214.59 × 63,744.93
  4. Step 4: Simplify right side
    86,393.61x = 7,599,325,375.80
  5. Step 5: Solve for x
    x = 7,599,325,375.80/86,393.61
  6. Step 6: Final answer
    x = 87,961.66

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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.