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Finding the Fourth Proportional to 70,203.05, 96,880.05 and 39,988.36

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Solution

The fourth proportional to 70,203.05, 96,880.05 and 39,988.36 is: 55,183.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,203.05 : 96,880.05 = 39,988.36 : x
  2. Step 2: Convert to fraction form
    70,203.05/96,880.05 = 39,988.36/x
  3. Step 3: Cross multiply
    70,203.05x = 96,880.05 × 39,988.36
  4. Step 4: Simplify right side
    70,203.05x = 3,874,073,831.82
  5. Step 5: Solve for x
    x = 3,874,073,831.82/70,203.05
  6. Step 6: Final answer
    x = 55,183.84

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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.