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Finding the Fourth Proportional to 64,284.72, 96,436.24 and 19,914.96

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Solution

The fourth proportional to 64,284.72, 96,436.24 and 19,914.96 is: 29,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,284.72 : 96,436.24 = 19,914.96 : x
  2. Step 2: Convert to fraction form
    64,284.72/96,436.24 = 19,914.96/x
  3. Step 3: Cross multiply
    64,284.72x = 96,436.24 × 19,914.96
  4. Step 4: Simplify right side
    64,284.72x = 1,920,523,862.15
  5. Step 5: Solve for x
    x = 1,920,523,862.15/64,284.72
  6. Step 6: Final answer
    x = 29,875.28

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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.