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Finding the Fourth Proportional to 64,361.84, 96,557.88 and 19,986.32

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Solution

The fourth proportional to 64,361.84, 96,557.88 and 19,986.32 is: 29,984.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,361.84 : 96,557.88 = 19,986.32 : x
  2. Step 2: Convert to fraction form
    64,361.84/96,557.88 = 19,986.32/x
  3. Step 3: Cross multiply
    64,361.84x = 96,557.88 × 19,986.32
  4. Step 4: Simplify right side
    64,361.84x = 1,929,836,688.20
  5. Step 5: Solve for x
    x = 1,929,836,688.20/64,361.84
  6. Step 6: Final answer
    x = 29,984.18

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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.