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Finding the Fourth Proportional to 56,395.80, 77,820.78 and 33,730.20

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Solution

The fourth proportional to 56,395.80, 77,820.78 and 33,730.20 is: 46,544.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,395.80 : 77,820.78 = 33,730.20 : x
  2. Step 2: Convert to fraction form
    56,395.80/77,820.78 = 33,730.20/x
  3. Step 3: Cross multiply
    56,395.80x = 77,820.78 × 33,730.20
  4. Step 4: Simplify right side
    56,395.80x = 2,624,910,473.56
  5. Step 5: Solve for x
    x = 2,624,910,473.56/56,395.80
  6. Step 6: Final answer
    x = 46,544.43

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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.