Home / 70,240.06-105,352.80-20,327.86

Finding the Fourth Proportional to 70,240.06, 105,352.80 and 20,327.86

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Solution

The fourth proportional to 70,240.06, 105,352.80 and 20,327.86 is: 30,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,240.06 : 105,352.80 = 20,327.86 : x
  2. Step 2: Convert to fraction form
    70,240.06/105,352.80 = 20,327.86/x
  3. Step 3: Cross multiply
    70,240.06x = 105,352.80 × 20,327.86
  4. Step 4: Simplify right side
    70,240.06x = 2,141,596,969.01
  5. Step 5: Solve for x
    x = 2,141,596,969.01/70,240.06
  6. Step 6: Final answer
    x = 30,489.68

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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.