Home / 78,328.44-108,090.36-42,517.67

Finding the Fourth Proportional to 78,328.44, 108,090.36 and 42,517.67

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Solution

The fourth proportional to 78,328.44, 108,090.36 and 42,517.67 is: 58,672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.44 : 108,090.36 = 42,517.67 : x
  2. Step 2: Convert to fraction form
    78,328.44/108,090.36 = 42,517.67/x
  3. Step 3: Cross multiply
    78,328.44x = 108,090.36 × 42,517.67
  4. Step 4: Simplify right side
    78,328.44x = 4,595,749,716.21
  5. Step 5: Solve for x
    x = 4,595,749,716.21/78,328.44
  6. Step 6: Final answer
    x = 58,672.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.