Home / 71,389.38-107,089.33-18,798.50

Finding the Fourth Proportional to 71,389.38, 107,089.33 and 18,798.50

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Solution

The fourth proportional to 71,389.38, 107,089.33 and 18,798.50 is: 28,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.38 : 107,089.33 = 18,798.50 : x
  2. Step 2: Convert to fraction form
    71,389.38/107,089.33 = 18,798.50/x
  3. Step 3: Cross multiply
    71,389.38x = 107,089.33 × 18,798.50
  4. Step 4: Simplify right side
    71,389.38x = 2,013,118,770.01
  5. Step 5: Solve for x
    x = 2,013,118,770.01/71,389.38
  6. Step 6: Final answer
    x = 28,199.14

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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.