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Finding the Fourth Proportional to 84,894.72, 127,298.32 and 38,107.52

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Solution

The fourth proportional to 84,894.72, 127,298.32 and 38,107.52 is: 57,141.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,894.72 : 127,298.32 = 38,107.52 : x
  2. Step 2: Convert to fraction form
    84,894.72/127,298.32 = 38,107.52/x
  3. Step 3: Cross multiply
    84,894.72x = 127,298.32 × 38,107.52
  4. Step 4: Simplify right side
    84,894.72x = 4,851,023,275.37
  5. Step 5: Solve for x
    x = 4,851,023,275.37/84,894.72
  6. Step 6: Final answer
    x = 57,141.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.