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Finding the Fourth Proportional to 61,688.40, 85,135.02 and 34,837.44

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Solution

The fourth proportional to 61,688.40, 85,135.02 and 34,837.44 is: 48,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,688.40 : 85,135.02 = 34,837.44 : x
  2. Step 2: Convert to fraction form
    61,688.40/85,135.02 = 34,837.44/x
  3. Step 3: Cross multiply
    61,688.40x = 85,135.02 × 34,837.44
  4. Step 4: Simplify right side
    61,688.40x = 2,965,886,151.15
  5. Step 5: Solve for x
    x = 2,965,886,151.15/61,688.40
  6. Step 6: Final answer
    x = 48,078.51

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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.