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Finding the Fourth Proportional to 64,266.80, 96,364.44 and 19,881.20

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Solution

The fourth proportional to 64,266.80, 96,364.44 and 19,881.20 is: 29,810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,266.80 : 96,364.44 = 19,881.20 : x
  2. Step 2: Convert to fraction form
    64,266.80/96,364.44 = 19,881.20/x
  3. Step 3: Cross multiply
    64,266.80x = 96,364.44 × 19,881.20
  4. Step 4: Simplify right side
    64,266.80x = 1,915,840,704.53
  5. Step 5: Solve for x
    x = 1,915,840,704.53/64,266.80
  6. Step 6: Final answer
    x = 29,810.74

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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.