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Finding the Fourth Proportional to 65,559.60, 98,339.40 and 18,817.20

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Solution

The fourth proportional to 65,559.60, 98,339.40 and 18,817.20 is: 28,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,559.60 : 98,339.40 = 18,817.20 : x
  2. Step 2: Convert to fraction form
    65,559.60/98,339.40 = 18,817.20/x
  3. Step 3: Cross multiply
    65,559.60x = 98,339.40 × 18,817.20
  4. Step 4: Simplify right side
    65,559.60x = 1,850,472,157.68
  5. Step 5: Solve for x
    x = 1,850,472,157.68/65,559.60
  6. Step 6: Final answer
    x = 28,225.80

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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.