Home / 80,521.58-111,130.03-48,690.71

Finding the Fourth Proportional to 80,521.58, 111,130.03 and 48,690.71

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Solution

The fourth proportional to 80,521.58, 111,130.03 and 48,690.71 is: 67,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,521.58 : 111,130.03 = 48,690.71 : x
  2. Step 2: Convert to fraction form
    80,521.58/111,130.03 = 48,690.71/x
  3. Step 3: Cross multiply
    80,521.58x = 111,130.03 × 48,690.71
  4. Step 4: Simplify right side
    80,521.58x = 5,410,999,507.37
  5. Step 5: Solve for x
    x = 5,410,999,507.37/80,521.58
  6. Step 6: Final answer
    x = 67,199.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.