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Finding the Fourth Proportional to 64,351.84, 88,775.52 and 40,491.68

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Solution

The fourth proportional to 64,351.84, 88,775.52 and 40,491.68 is: 55,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,351.84 : 88,775.52 = 40,491.68 : x
  2. Step 2: Convert to fraction form
    64,351.84/88,775.52 = 40,491.68/x
  3. Step 3: Cross multiply
    64,351.84x = 88,775.52 × 40,491.68
  4. Step 4: Simplify right side
    64,351.84x = 3,594,669,947.67
  5. Step 5: Solve for x
    x = 3,594,669,947.67/64,351.84
  6. Step 6: Final answer
    x = 55,859.63

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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.