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Finding the Fourth Proportional to 65,764.80, 98,647.20 and 60,321.60

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Solution

The fourth proportional to 65,764.80, 98,647.20 and 60,321.60 is: 90,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,764.80 : 98,647.20 = 60,321.60 : x
  2. Step 2: Convert to fraction form
    65,764.80/98,647.20 = 60,321.60/x
  3. Step 3: Cross multiply
    65,764.80x = 98,647.20 × 60,321.60
  4. Step 4: Simplify right side
    65,764.80x = 5,950,556,939.52
  5. Step 5: Solve for x
    x = 5,950,556,939.52/65,764.80
  6. Step 6: Final answer
    x = 90,482.40

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1.5x scale

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.