Home / 70,485.07-105,540.55-55,134.66

Finding the Fourth Proportional to 70,485.07, 105,540.55 and 55,134.66

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Solution

The fourth proportional to 70,485.07, 105,540.55 and 55,134.66 is: 82,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,485.07 : 105,540.55 = 55,134.66 : x
  2. Step 2: Convert to fraction form
    70,485.07/105,540.55 = 55,134.66/x
  3. Step 3: Cross multiply
    70,485.07x = 105,540.55 × 55,134.66
  4. Step 4: Simplify right side
    70,485.07x = 5,818,942,340.46
  5. Step 5: Solve for x
    x = 5,818,942,340.46/70,485.07
  6. Step 6: Final answer
    x = 82,555.67

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1.5x scale

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.