Home / 77,154.21-115,542.59-69,674.67

Finding the Fourth Proportional to 77,154.21, 115,542.59 and 69,674.67

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Solution

The fourth proportional to 77,154.21, 115,542.59 and 69,674.67 is: 104,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,154.21 : 115,542.59 = 69,674.67 : x
  2. Step 2: Convert to fraction form
    77,154.21/115,542.59 = 69,674.67/x
  3. Step 3: Cross multiply
    77,154.21x = 115,542.59 × 69,674.67
  4. Step 4: Simplify right side
    77,154.21x = 8,050,391,480.82
  5. Step 5: Solve for x
    x = 8,050,391,480.82/77,154.21
  6. Step 6: Final answer
    x = 104,341.57

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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.