Home / 70,216.24-105,360-40,660.96

Finding the Fourth Proportional to 70,216.24, 105,360 and 40,660.96

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Solution

The fourth proportional to 70,216.24, 105,360 and 40,660.96 is: 61,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,216.24 : 105,360 = 40,660.96 : x
  2. Step 2: Convert to fraction form
    70,216.24/105,360 = 40,660.96/x
  3. Step 3: Cross multiply
    70,216.24x = 105,360 × 40,660.96
  4. Step 4: Simplify right side
    70,216.24x = 4,284,038,745.60
  5. Step 5: Solve for x
    x = 4,284,038,745.60/70,216.24
  6. Step 6: Final answer
    x = 61,012.08

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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.