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Finding the Fourth Proportional to 67,783.80, 101,675.70 and 54,661.80

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Solution

The fourth proportional to 67,783.80, 101,675.70 and 54,661.80 is: 81,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,783.80 : 101,675.70 = 54,661.80 : x
  2. Step 2: Convert to fraction form
    67,783.80/101,675.70 = 54,661.80/x
  3. Step 3: Cross multiply
    67,783.80x = 101,675.70 × 54,661.80
  4. Step 4: Simplify right side
    67,783.80x = 5,557,776,778.26
  5. Step 5: Solve for x
    x = 5,557,776,778.26/67,783.80
  6. Step 6: Final answer
    x = 81,992.70

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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.