Home / 70,373.10-105,558.99-30,420.33

Finding the Fourth Proportional to 70,373.10, 105,558.99 and 30,420.33

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Solution

The fourth proportional to 70,373.10, 105,558.99 and 30,420.33 is: 45,630.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.10 : 105,558.99 = 30,420.33 : x
  2. Step 2: Convert to fraction form
    70,373.10/105,558.99 = 30,420.33/x
  3. Step 3: Cross multiply
    70,373.10x = 105,558.99 × 30,420.33
  4. Step 4: Simplify right side
    70,373.10x = 3,211,139,310.27
  5. Step 5: Solve for x
    x = 3,211,139,310.27/70,373.10
  6. Step 6: Final answer
    x = 45,630.21

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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.