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Finding the Fourth Proportional to 65,886.40, 98,829.60 and 16,638.40

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Solution

The fourth proportional to 65,886.40, 98,829.60 and 16,638.40 is: 24,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,886.40 : 98,829.60 = 16,638.40 : x
  2. Step 2: Convert to fraction form
    65,886.40/98,829.60 = 16,638.40/x
  3. Step 3: Cross multiply
    65,886.40x = 98,829.60 × 16,638.40
  4. Step 4: Simplify right side
    65,886.40x = 1,644,366,416.64
  5. Step 5: Solve for x
    x = 1,644,366,416.64/65,886.40
  6. Step 6: Final answer
    x = 24,957.60

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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.