Home / 70,219.97-105,325.85-20,298.96

Finding the Fourth Proportional to 70,219.97, 105,325.85 and 20,298.96

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Solution

The fourth proportional to 70,219.97, 105,325.85 and 20,298.96 is: 30,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,219.97 : 105,325.85 = 20,298.96 : x
  2. Step 2: Convert to fraction form
    70,219.97/105,325.85 = 20,298.96/x
  3. Step 3: Cross multiply
    70,219.97x = 105,325.85 × 20,298.96
  4. Step 4: Simplify right side
    70,219.97x = 2,138,005,216.12
  5. Step 5: Solve for x
    x = 2,138,005,216.12/70,219.97
  6. Step 6: Final answer
    x = 30,447.25

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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.