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Finding the Fourth Proportional to 65,620.80, 98,479.80 and 48,124.80

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Solution

The fourth proportional to 65,620.80, 98,479.80 and 48,124.80 is: 72,222.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,620.80 : 98,479.80 = 48,124.80 : x
  2. Step 2: Convert to fraction form
    65,620.80/98,479.80 = 48,124.80/x
  3. Step 3: Cross multiply
    65,620.80x = 98,479.80 × 48,124.80
  4. Step 4: Simplify right side
    65,620.80x = 4,739,320,679.04
  5. Step 5: Solve for x
    x = 4,739,320,679.04/65,620.80
  6. Step 6: Final answer
    x = 72,222.84

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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.