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Finding the Fourth Proportional to 56,784.43, 78,380.88 and 36,625.76

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Solution

The fourth proportional to 56,784.43, 78,380.88 and 36,625.76 is: 50,555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,784.43 : 78,380.88 = 36,625.76 : x
  2. Step 2: Convert to fraction form
    56,784.43/78,380.88 = 36,625.76/x
  3. Step 3: Cross multiply
    56,784.43x = 78,380.88 × 36,625.76
  4. Step 4: Simplify right side
    56,784.43x = 2,870,759,237.20
  5. Step 5: Solve for x
    x = 2,870,759,237.20/56,784.43
  6. Step 6: Final answer
    x = 50,555.39

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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.