Home / 70,261.89-105,377.31-20,331.06

Finding the Fourth Proportional to 70,261.89, 105,377.31 and 20,331.06

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Solution

The fourth proportional to 70,261.89, 105,377.31 and 20,331.06 is: 30,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,261.89 : 105,377.31 = 20,331.06 : x
  2. Step 2: Convert to fraction form
    70,261.89/105,377.31 = 20,331.06/x
  3. Step 3: Cross multiply
    70,261.89x = 105,377.31 × 20,331.06
  4. Step 4: Simplify right side
    70,261.89x = 2,142,432,412.25
  5. Step 5: Solve for x
    x = 2,142,432,412.25/70,261.89
  6. Step 6: Final answer
    x = 30,492.10

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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.