Home / 77,135.53-115,810.38-39,722.35

Finding the Fourth Proportional to 77,135.53, 115,810.38 and 39,722.35

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Solution

The fourth proportional to 77,135.53, 115,810.38 and 39,722.35 is: 59,638.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,135.53 : 115,810.38 = 39,722.35 : x
  2. Step 2: Convert to fraction form
    77,135.53/115,810.38 = 39,722.35/x
  3. Step 3: Cross multiply
    77,135.53x = 115,810.38 × 39,722.35
  4. Step 4: Simplify right side
    77,135.53x = 4,600,260,249.38
  5. Step 5: Solve for x
    x = 4,600,260,249.38/77,135.53
  6. Step 6: Final answer
    x = 59,638.67

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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.