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Finding the Fourth Proportional to 70,192.32, 96,855.84 and 40,384.32

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Solution

The fourth proportional to 70,192.32, 96,855.84 and 40,384.32 is: 55,724.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,192.32 : 96,855.84 = 40,384.32 : x
  2. Step 2: Convert to fraction form
    70,192.32/96,855.84 = 40,384.32/x
  3. Step 3: Cross multiply
    70,192.32x = 96,855.84 × 40,384.32
  4. Step 4: Simplify right side
    70,192.32x = 3,911,457,236.43
  5. Step 5: Solve for x
    x = 3,911,457,236.43/70,192.32
  6. Step 6: Final answer
    x = 55,724.86

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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.