Home / 72,901.40-109,352.25-20,311.07

Finding the Fourth Proportional to 72,901.40, 109,352.25 and 20,311.07

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Solution

The fourth proportional to 72,901.40, 109,352.25 and 20,311.07 is: 30,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,901.40 : 109,352.25 = 20,311.07 : x
  2. Step 2: Convert to fraction form
    72,901.40/109,352.25 = 20,311.07/x
  3. Step 3: Cross multiply
    72,901.40x = 109,352.25 × 20,311.07
  4. Step 4: Simplify right side
    72,901.40x = 2,221,060,657.65
  5. Step 5: Solve for x
    x = 2,221,060,657.65/72,901.40
  6. Step 6: Final answer
    x = 30,466.64

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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.