Home / 70,231.50-105,331.64-20,300.66

Finding the Fourth Proportional to 70,231.50, 105,331.64 and 20,300.66

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Solution

The fourth proportional to 70,231.50, 105,331.64 and 20,300.66 is: 30,446.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,231.50 : 105,331.64 = 20,300.66 : x
  2. Step 2: Convert to fraction form
    70,231.50/105,331.64 = 20,300.66/x
  3. Step 3: Cross multiply
    70,231.50x = 105,331.64 × 20,300.66
  4. Step 4: Simplify right side
    70,231.50x = 2,138,301,810.88
  5. Step 5: Solve for x
    x = 2,138,301,810.88/70,231.50
  6. Step 6: Final answer
    x = 30,446.48

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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.