Home / 51,467.20-77,200.80-20,298.40

Finding the Fourth Proportional to 51,467.20, 77,200.80 and 20,298.40

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Solution

The fourth proportional to 51,467.20, 77,200.80 and 20,298.40 is: 30,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,467.20 : 77,200.80 = 20,298.40 : x
  2. Step 2: Convert to fraction form
    51,467.20/77,200.80 = 20,298.40/x
  3. Step 3: Cross multiply
    51,467.20x = 77,200.80 × 20,298.40
  4. Step 4: Simplify right side
    51,467.20x = 1,567,052,718.72
  5. Step 5: Solve for x
    x = 1,567,052,718.72/51,467.20
  6. Step 6: Final answer
    x = 30,447.60

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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.