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Finding the Fourth Proportional to 67,302.80, 100,840.80 and 53,208.80

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Solution

The fourth proportional to 67,302.80, 100,840.80 and 53,208.80 is: 79,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,302.80 : 100,840.80 = 53,208.80 : x
  2. Step 2: Convert to fraction form
    67,302.80/100,840.80 = 53,208.80/x
  3. Step 3: Cross multiply
    67,302.80x = 100,840.80 × 53,208.80
  4. Step 4: Simplify right side
    67,302.80x = 5,365,617,959.04
  5. Step 5: Solve for x
    x = 5,365,617,959.04/67,302.80
  6. Step 6: Final answer
    x = 79,723.55

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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.