Home / 70,323.36-105,495.21-20,403.67

Finding the Fourth Proportional to 70,323.36, 105,495.21 and 20,403.67

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Solution

The fourth proportional to 70,323.36, 105,495.21 and 20,403.67 is: 30,608.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,323.36 : 105,495.21 = 20,403.67 : x
  2. Step 2: Convert to fraction form
    70,323.36/105,495.21 = 20,403.67/x
  3. Step 3: Cross multiply
    70,323.36x = 105,495.21 × 20,403.67
  4. Step 4: Simplify right side
    70,323.36x = 2,152,489,451.42
  5. Step 5: Solve for x
    x = 2,152,489,451.42/70,323.36
  6. Step 6: Final answer
    x = 30,608.46

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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.