Home / 76,090.28-114,135.54-20,686.28

Finding the Fourth Proportional to 76,090.28, 114,135.54 and 20,686.28

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Solution

The fourth proportional to 76,090.28, 114,135.54 and 20,686.28 is: 31,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,090.28 : 114,135.54 = 20,686.28 : x
  2. Step 2: Convert to fraction form
    76,090.28/114,135.54 = 20,686.28/x
  3. Step 3: Cross multiply
    76,090.28x = 114,135.54 × 20,686.28
  4. Step 4: Simplify right side
    76,090.28x = 2,361,039,738.39
  5. Step 5: Solve for x
    x = 2,361,039,738.39/76,090.28
  6. Step 6: Final answer
    x = 31,029.45

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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.