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Finding the Fourth Proportional to 64,409.76, 88,888.20 and 36,115.44

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Solution

The fourth proportional to 64,409.76, 88,888.20 and 36,115.44 is: 49,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,409.76 : 88,888.20 = 36,115.44 : x
  2. Step 2: Convert to fraction form
    64,409.76/88,888.20 = 36,115.44/x
  3. Step 3: Cross multiply
    64,409.76x = 88,888.20 × 36,115.44
  4. Step 4: Simplify right side
    64,409.76x = 3,210,236,453.81
  5. Step 5: Solve for x
    x = 3,210,236,453.81/64,409.76
  6. Step 6: Final answer
    x = 49,840.84

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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.