Home / 56,122.30-77,449.20-30,628.86

Finding the Fourth Proportional to 56,122.30, 77,449.20 and 30,628.86

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Solution

The fourth proportional to 56,122.30, 77,449.20 and 30,628.86 is: 42,268.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,122.30 : 77,449.20 = 30,628.86 : x
  2. Step 2: Convert to fraction form
    56,122.30/77,449.20 = 30,628.86/x
  3. Step 3: Cross multiply
    56,122.30x = 77,449.20 × 30,628.86
  4. Step 4: Simplify right side
    56,122.30x = 2,372,180,703.91
  5. Step 5: Solve for x
    x = 2,372,180,703.91/56,122.30
  6. Step 6: Final answer
    x = 42,268.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.