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Finding the Fourth Proportional to 70,208.76, 96,876.79 and 39,994.68

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Solution

The fourth proportional to 70,208.76, 96,876.79 and 39,994.68 is: 55,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,208.76 : 96,876.79 = 39,994.68 : x
  2. Step 2: Convert to fraction form
    70,208.76/96,876.79 = 39,994.68/x
  3. Step 3: Cross multiply
    70,208.76x = 96,876.79 × 39,994.68
  4. Step 4: Simplify right side
    70,208.76x = 3,874,556,478.78
  5. Step 5: Solve for x
    x = 3,874,556,478.78/70,208.76
  6. Step 6: Final answer
    x = 55,186.22

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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.