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Finding the Fourth Proportional to 80,570.90, 120,659.51 and 69,548.42

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Solution

The fourth proportional to 80,570.90, 120,659.51 and 69,548.42 is: 104,152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,570.90 : 120,659.51 = 69,548.42 : x
  2. Step 2: Convert to fraction form
    80,570.90/120,659.51 = 69,548.42/x
  3. Step 3: Cross multiply
    80,570.90x = 120,659.51 × 69,548.42
  4. Step 4: Simplify right side
    80,570.90x = 8,391,677,327.43
  5. Step 5: Solve for x
    x = 8,391,677,327.43/80,570.90
  6. Step 6: Final answer
    x = 104,152.71

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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.