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Finding the Fourth Proportional to 80,897.88, 121,350.47 and 30,965.03

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Solution

The fourth proportional to 80,897.88, 121,350.47 and 30,965.03 is: 46,448.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,897.88 : 121,350.47 = 30,965.03 : x
  2. Step 2: Convert to fraction form
    80,897.88/121,350.47 = 30,965.03/x
  3. Step 3: Cross multiply
    80,897.88x = 121,350.47 × 30,965.03
  4. Step 4: Simplify right side
    80,897.88x = 3,757,620,485.86
  5. Step 5: Solve for x
    x = 3,757,620,485.86/80,897.88
  6. Step 6: Final answer
    x = 46,448.93

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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.