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Finding the Fourth Proportional to 85,897.92, 118,514.88 and 55,684.56

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Solution

The fourth proportional to 85,897.92, 118,514.88 and 55,684.56 is: 76,828.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,897.92 : 118,514.88 = 55,684.56 : x
  2. Step 2: Convert to fraction form
    85,897.92/118,514.88 = 55,684.56/x
  3. Step 3: Cross multiply
    85,897.92x = 118,514.88 × 55,684.56
  4. Step 4: Simplify right side
    85,897.92x = 6,599,448,946.25
  5. Step 5: Solve for x
    x = 6,599,448,946.25/85,897.92
  6. Step 6: Final answer
    x = 76,828.97

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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.