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Finding the Fourth Proportional to 57,754.76, 79,701.56 and 31,258.76

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Solution

The fourth proportional to 57,754.76, 79,701.56 and 31,258.76 is: 43,137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,754.76 : 79,701.56 = 31,258.76 : x
  2. Step 2: Convert to fraction form
    57,754.76/79,701.56 = 31,258.76/x
  3. Step 3: Cross multiply
    57,754.76x = 79,701.56 × 31,258.76
  4. Step 4: Simplify right side
    57,754.76x = 2,491,371,935.67
  5. Step 5: Solve for x
    x = 2,491,371,935.67/57,754.76
  6. Step 6: Final answer
    x = 43,137.08

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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.