Home / 80,813.12-121,179.14-47,090.06

Finding the Fourth Proportional to 80,813.12, 121,179.14 and 47,090.06

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Solution

The fourth proportional to 80,813.12, 121,179.14 and 47,090.06 is: 70,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,813.12 : 121,179.14 = 47,090.06 : x
  2. Step 2: Convert to fraction form
    80,813.12/121,179.14 = 47,090.06/x
  3. Step 3: Cross multiply
    80,813.12x = 121,179.14 × 47,090.06
  4. Step 4: Simplify right side
    80,813.12x = 5,706,332,973.35
  5. Step 5: Solve for x
    x = 5,706,332,973.35/80,813.12
  6. Step 6: Final answer
    x = 70,611.47

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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.