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Finding the Fourth Proportional to 112,256, 168,385.28 and 38,389.76

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Solution

The fourth proportional to 112,256, 168,385.28 and 38,389.76 is: 57,585.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,256 : 168,385.28 = 38,389.76 : x
  2. Step 2: Convert to fraction form
    112,256/168,385.28 = 38,389.76/x
  3. Step 3: Cross multiply
    112,256x = 168,385.28 × 38,389.76
  4. Step 4: Simplify right side
    112,256x = 6,464,270,486.73
  5. Step 5: Solve for x
    x = 6,464,270,486.73/112,256
  6. Step 6: Final answer
    x = 57,585.08

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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.