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Finding the Fourth Proportional to 71,379.04, 107,058.84 and 18,784.12

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Solution

The fourth proportional to 71,379.04, 107,058.84 and 18,784.12 is: 28,173.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379.04 : 107,058.84 = 18,784.12 : x
  2. Step 2: Convert to fraction form
    71,379.04/107,058.84 = 18,784.12/x
  3. Step 3: Cross multiply
    71,379.04x = 107,058.84 × 18,784.12
  4. Step 4: Simplify right side
    71,379.04x = 2,011,006,097.62
  5. Step 5: Solve for x
    x = 2,011,006,097.62/71,379.04
  6. Step 6: Final answer
    x = 28,173.62

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1.5x scale

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.