Home / 47,190.28-70,736.20-19,129.70

Finding the Fourth Proportional to 47,190.28, 70,736.20 and 19,129.70

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Solution

The fourth proportional to 47,190.28, 70,736.20 and 19,129.70 is: 28,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,190.28 : 70,736.20 = 19,129.70 : x
  2. Step 2: Convert to fraction form
    47,190.28/70,736.20 = 19,129.70/x
  3. Step 3: Cross multiply
    47,190.28x = 70,736.20 × 19,129.70
  4. Step 4: Simplify right side
    47,190.28x = 1,353,161,931.46
  5. Step 5: Solve for x
    x = 1,353,161,931.46/47,190.28
  6. Step 6: Final answer
    x = 28,674.59

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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.