Home / 56,320.13-77,724.21-31,169.63

Finding the Fourth Proportional to 56,320.13, 77,724.21 and 31,169.63

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Solution

The fourth proportional to 56,320.13, 77,724.21 and 31,169.63 is: 43,015.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,320.13 : 77,724.21 = 31,169.63 : x
  2. Step 2: Convert to fraction form
    56,320.13/77,724.21 = 31,169.63/x
  3. Step 3: Cross multiply
    56,320.13x = 77,724.21 × 31,169.63
  4. Step 4: Simplify right side
    56,320.13x = 2,422,634,479.12
  5. Step 5: Solve for x
    x = 2,422,634,479.12/56,320.13
  6. Step 6: Final answer
    x = 43,015.43

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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.