Home / 70,189.68-105,357.44-40,665.20

Finding the Fourth Proportional to 70,189.68, 105,357.44 and 40,665.20

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Solution

The fourth proportional to 70,189.68, 105,357.44 and 40,665.20 is: 61,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.68 : 105,357.44 = 40,665.20 : x
  2. Step 2: Convert to fraction form
    70,189.68/105,357.44 = 40,665.20/x
  3. Step 3: Cross multiply
    70,189.68x = 105,357.44 × 40,665.20
  4. Step 4: Simplify right side
    70,189.68x = 4,284,381,369.09
  5. Step 5: Solve for x
    x = 4,284,381,369.09/70,189.68
  6. Step 6: Final answer
    x = 61,040.05

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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.