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Finding the Fourth Proportional to 34,885.70, 48,141.25 and 19,779.76

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Solution

The fourth proportional to 34,885.70, 48,141.25 and 19,779.76 is: 27,295.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,885.70 : 48,141.25 = 19,779.76 : x
  2. Step 2: Convert to fraction form
    34,885.70/48,141.25 = 19,779.76/x
  3. Step 3: Cross multiply
    34,885.70x = 48,141.25 × 19,779.76
  4. Step 4: Simplify right side
    34,885.70x = 952,222,371.10
  5. Step 5: Solve for x
    x = 952,222,371.10/34,885.70
  6. Step 6: Final answer
    x = 27,295.49

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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.