Home / 78,313.05-108,036.86-52,811.15

Finding the Fourth Proportional to 78,313.05, 108,036.86 and 52,811.15

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Solution

The fourth proportional to 78,313.05, 108,036.86 and 52,811.15 is: 72,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.05 : 108,036.86 = 52,811.15 : x
  2. Step 2: Convert to fraction form
    78,313.05/108,036.86 = 52,811.15/x
  3. Step 3: Cross multiply
    78,313.05x = 108,036.86 × 52,811.15
  4. Step 4: Simplify right side
    78,313.05x = 5,705,550,014.75
  5. Step 5: Solve for x
    x = 5,705,550,014.75/78,313.05
  6. Step 6: Final answer
    x = 72,855.67

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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.