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Finding the Fourth Proportional to 70,137.64, 96,786.30 and 38,300.32

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Solution

The fourth proportional to 70,137.64, 96,786.30 and 38,300.32 is: 52,852.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.64 : 96,786.30 = 38,300.32 : x
  2. Step 2: Convert to fraction form
    70,137.64/96,786.30 = 38,300.32/x
  3. Step 3: Cross multiply
    70,137.64x = 96,786.30 × 38,300.32
  4. Step 4: Simplify right side
    70,137.64x = 3,706,946,261.62
  5. Step 5: Solve for x
    x = 3,706,946,261.62/70,137.64
  6. Step 6: Final answer
    x = 52,852.45

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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.