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Finding the Fourth Proportional to 53,158.80, 79,738.20 and 50,739.60

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Solution

The fourth proportional to 53,158.80, 79,738.20 and 50,739.60 is: 76,109.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,158.80 : 79,738.20 = 50,739.60 : x
  2. Step 2: Convert to fraction form
    53,158.80/79,738.20 = 50,739.60/x
  3. Step 3: Cross multiply
    53,158.80x = 79,738.20 × 50,739.60
  4. Step 4: Simplify right side
    53,158.80x = 4,045,884,372.72
  5. Step 5: Solve for x
    x = 4,045,884,372.72/53,158.80
  6. Step 6: Final answer
    x = 76,109.40

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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.