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Finding the Fourth Proportional to 86,011.82, 118,692.21 and 47,773.80

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Solution

The fourth proportional to 86,011.82, 118,692.21 and 47,773.80 is: 65,925.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,011.82 : 118,692.21 = 47,773.80 : x
  2. Step 2: Convert to fraction form
    86,011.82/118,692.21 = 47,773.80/x
  3. Step 3: Cross multiply
    86,011.82x = 118,692.21 × 47,773.80
  4. Step 4: Simplify right side
    86,011.82x = 5,670,377,946.89
  5. Step 5: Solve for x
    x = 5,670,377,946.89/86,011.82
  6. Step 6: Final answer
    x = 65,925.56

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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.