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Finding the Fourth Proportional to 56,057.84, 84,086.60 and 18,620.80

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Solution

The fourth proportional to 56,057.84, 84,086.60 and 18,620.80 is: 27,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,057.84 : 84,086.60 = 18,620.80 : x
  2. Step 2: Convert to fraction form
    56,057.84/84,086.60 = 18,620.80/x
  3. Step 3: Cross multiply
    56,057.84x = 84,086.60 × 18,620.80
  4. Step 4: Simplify right side
    56,057.84x = 1,565,759,761.28
  5. Step 5: Solve for x
    x = 1,565,759,761.28/56,057.84
  6. Step 6: Final answer
    x = 27,931.15

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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.