Home / 78,272.09-108,015.43-42,462.11

Finding the Fourth Proportional to 78,272.09, 108,015.43 and 42,462.11

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Solution

The fourth proportional to 78,272.09, 108,015.43 and 42,462.11 is: 58,597.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,272.09 : 108,015.43 = 42,462.11 : x
  2. Step 2: Convert to fraction form
    78,272.09/108,015.43 = 42,462.11/x
  3. Step 3: Cross multiply
    78,272.09x = 108,015.43 × 42,462.11
  4. Step 4: Simplify right side
    78,272.09x = 4,586,562,317.97
  5. Step 5: Solve for x
    x = 4,586,562,317.97/78,272.09
  6. Step 6: Final answer
    x = 58,597.67

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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.