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Finding the Fourth Proportional to 80,580.63, 120,870.94 and 30,649.19

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Solution

The fourth proportional to 80,580.63, 120,870.94 and 30,649.19 is: 45,973.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,580.63 : 120,870.94 = 30,649.19 : x
  2. Step 2: Convert to fraction form
    80,580.63/120,870.94 = 30,649.19/x
  3. Step 3: Cross multiply
    80,580.63x = 120,870.94 × 30,649.19
  4. Step 4: Simplify right side
    80,580.63x = 3,704,596,631.09
  5. Step 5: Solve for x
    x = 3,704,596,631.09/80,580.63
  6. Step 6: Final answer
    x = 45,973.79

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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.