Home / 80,715.87-121,065.58-21,557.52

Finding the Fourth Proportional to 80,715.87, 121,065.58 and 21,557.52

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Solution

The fourth proportional to 80,715.87, 121,065.58 and 21,557.52 is: 32,334.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,715.87 : 121,065.58 = 21,557.52 : x
  2. Step 2: Convert to fraction form
    80,715.87/121,065.58 = 21,557.52/x
  3. Step 3: Cross multiply
    80,715.87x = 121,065.58 × 21,557.52
  4. Step 4: Simplify right side
    80,715.87x = 2,609,873,662.16
  5. Step 5: Solve for x
    x = 2,609,873,662.16/80,715.87
  6. Step 6: Final answer
    x = 32,334.08

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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.