Home / 80,090.24-120,208.12-42,682.28

Finding the Fourth Proportional to 80,090.24, 120,208.12 and 42,682.28

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Solution

The fourth proportional to 80,090.24, 120,208.12 and 42,682.28 is: 64,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,090.24 : 120,208.12 = 42,682.28 : x
  2. Step 2: Convert to fraction form
    80,090.24/120,208.12 = 42,682.28/x
  3. Step 3: Cross multiply
    80,090.24x = 120,208.12 × 42,682.28
  4. Step 4: Simplify right side
    80,090.24x = 5,130,755,928.37
  5. Step 5: Solve for x
    x = 5,130,755,928.37/80,090.24
  6. Step 6: Final answer
    x = 64,062.19

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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.