Home / 70,137.15-105,168.33-30,648.03

Finding the Fourth Proportional to 70,137.15, 105,168.33 and 30,648.03

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Solution

The fourth proportional to 70,137.15, 105,168.33 and 30,648.03 is: 45,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.15 : 105,168.33 = 30,648.03 : x
  2. Step 2: Convert to fraction form
    70,137.15/105,168.33 = 30,648.03/x
  3. Step 3: Cross multiply
    70,137.15x = 105,168.33 × 30,648.03
  4. Step 4: Simplify right side
    70,137.15x = 3,223,202,132.89
  5. Step 5: Solve for x
    x = 3,223,202,132.89/70,137.15
  6. Step 6: Final answer
    x = 45,955.70

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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.