Home / 80,976.09-121,215-52,835.55

Finding the Fourth Proportional to 80,976.09, 121,215 and 52,835.55

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Solution

The fourth proportional to 80,976.09, 121,215 and 52,835.55 is: 79,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,976.09 : 121,215 = 52,835.55 : x
  2. Step 2: Convert to fraction form
    80,976.09/121,215 = 52,835.55/x
  3. Step 3: Cross multiply
    80,976.09x = 121,215 × 52,835.55
  4. Step 4: Simplify right side
    80,976.09x = 6,404,461,193.25
  5. Step 5: Solve for x
    x = 6,404,461,193.25/80,976.09
  6. Step 6: Final answer
    x = 79,090.77

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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.