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Finding the Fourth Proportional to 70,846.80, 106,287.62 and 20,926.64

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Solution

The fourth proportional to 70,846.80, 106,287.62 and 20,926.64 is: 31,395.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,846.80 : 106,287.62 = 20,926.64 : x
  2. Step 2: Convert to fraction form
    70,846.80/106,287.62 = 20,926.64/x
  3. Step 3: Cross multiply
    70,846.80x = 106,287.62 × 20,926.64
  4. Step 4: Simplify right side
    70,846.80x = 2,224,242,124.13
  5. Step 5: Solve for x
    x = 2,224,242,124.13/70,846.80
  6. Step 6: Final answer
    x = 31,395.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.