Home / 70,647.48-105,998.40-31,176.72

Finding the Fourth Proportional to 70,647.48, 105,998.40 and 31,176.72

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Solution

The fourth proportional to 70,647.48, 105,998.40 and 31,176.72 is: 46,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,647.48 : 105,998.40 = 31,176.72 : x
  2. Step 2: Convert to fraction form
    70,647.48/105,998.40 = 31,176.72/x
  3. Step 3: Cross multiply
    70,647.48x = 105,998.40 × 31,176.72
  4. Step 4: Simplify right side
    70,647.48x = 3,304,682,437.25
  5. Step 5: Solve for x
    x = 3,304,682,437.25/70,647.48
  6. Step 6: Final answer
    x = 46,777.07

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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.