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Finding the Fourth Proportional to 71,303.88, 106,962.48 and 18,713.64

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Solution

The fourth proportional to 71,303.88, 106,962.48 and 18,713.64 is: 28,072.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,303.88 : 106,962.48 = 18,713.64 : x
  2. Step 2: Convert to fraction form
    71,303.88/106,962.48 = 18,713.64/x
  3. Step 3: Cross multiply
    71,303.88x = 106,962.48 × 18,713.64
  4. Step 4: Simplify right side
    71,303.88x = 2,001,657,344.23
  5. Step 5: Solve for x
    x = 2,001,657,344.23/71,303.88
  6. Step 6: Final answer
    x = 28,072.21

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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.