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Finding the Fourth Proportional to 56,885.64, 78,496.74 and 31,736.76

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Solution

The fourth proportional to 56,885.64, 78,496.74 and 31,736.76 is: 43,793.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,885.64 : 78,496.74 = 31,736.76 : x
  2. Step 2: Convert to fraction form
    56,885.64/78,496.74 = 31,736.76/x
  3. Step 3: Cross multiply
    56,885.64x = 78,496.74 × 31,736.76
  4. Step 4: Simplify right side
    56,885.64x = 2,491,232,198.16
  5. Step 5: Solve for x
    x = 2,491,232,198.16/56,885.64
  6. Step 6: Final answer
    x = 43,793.69

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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.