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Finding the Fourth Proportional to 61,786.40, 92,678.84 and 15,039.68

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Solution

The fourth proportional to 61,786.40, 92,678.84 and 15,039.68 is: 22,559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,786.40 : 92,678.84 = 15,039.68 : x
  2. Step 2: Convert to fraction form
    61,786.40/92,678.84 = 15,039.68/x
  3. Step 3: Cross multiply
    61,786.40x = 92,678.84 × 15,039.68
  4. Step 4: Simplify right side
    61,786.40x = 1,393,860,096.37
  5. Step 5: Solve for x
    x = 1,393,860,096.37/61,786.40
  6. Step 6: Final answer
    x = 22,559.34

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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.