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Finding the Fourth Proportional to 65,871.36, 98,823.24 and 19,124.64

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Solution

The fourth proportional to 65,871.36, 98,823.24 and 19,124.64 is: 28,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,871.36 : 98,823.24 = 19,124.64 : x
  2. Step 2: Convert to fraction form
    65,871.36/98,823.24 = 19,124.64/x
  3. Step 3: Cross multiply
    65,871.36x = 98,823.24 × 19,124.64
  4. Step 4: Simplify right side
    65,871.36x = 1,889,958,888.63
  5. Step 5: Solve for x
    x = 1,889,958,888.63/65,871.36
  6. Step 6: Final answer
    x = 28,691.66

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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.