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Finding the Fourth Proportional to 86,113.84, 118,840.62 and 48,388

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Solution

The fourth proportional to 86,113.84, 118,840.62 and 48,388 is: 66,777.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,113.84 : 118,840.62 = 48,388 : x
  2. Step 2: Convert to fraction form
    86,113.84/118,840.62 = 48,388/x
  3. Step 3: Cross multiply
    86,113.84x = 118,840.62 × 48,388
  4. Step 4: Simplify right side
    86,113.84x = 5,750,459,920.56
  5. Step 5: Solve for x
    x = 5,750,459,920.56/86,113.84
  6. Step 6: Final answer
    x = 66,777.42

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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.