Home / 71,430.22-107,136.69-18,843.67

Finding the Fourth Proportional to 71,430.22, 107,136.69 and 18,843.67

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Solution

The fourth proportional to 71,430.22, 107,136.69 and 18,843.67 is: 28,263.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430.22 : 107,136.69 = 18,843.67 : x
  2. Step 2: Convert to fraction form
    71,430.22/107,136.69 = 18,843.67/x
  3. Step 3: Cross multiply
    71,430.22x = 107,136.69 × 18,843.67
  4. Step 4: Simplify right side
    71,430.22x = 2,018,848,431.25
  5. Step 5: Solve for x
    x = 2,018,848,431.25/71,430.22
  6. Step 6: Final answer
    x = 28,263.23

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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.