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Finding the Fourth Proportional to 56,863.25, 78,455.54 and 36,720.98

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Solution

The fourth proportional to 56,863.25, 78,455.54 and 36,720.98 is: 50,664.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,863.25 : 78,455.54 = 36,720.98 : x
  2. Step 2: Convert to fraction form
    56,863.25/78,455.54 = 36,720.98/x
  3. Step 3: Cross multiply
    56,863.25x = 78,455.54 × 36,720.98
  4. Step 4: Simplify right side
    56,863.25x = 2,880,964,102.41
  5. Step 5: Solve for x
    x = 2,880,964,102.41/56,863.25
  6. Step 6: Final answer
    x = 50,664.78

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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.