Home / 74,116.91-111,148.33-31,978.89

Finding the Fourth Proportional to 74,116.91, 111,148.33 and 31,978.89

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Solution

The fourth proportional to 74,116.91, 111,148.33 and 31,978.89 is: 47,956.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,116.91 : 111,148.33 = 31,978.89 : x
  2. Step 2: Convert to fraction form
    74,116.91/111,148.33 = 31,978.89/x
  3. Step 3: Cross multiply
    74,116.91x = 111,148.33 × 31,978.89
  4. Step 4: Simplify right side
    74,116.91x = 3,554,400,218.75
  5. Step 5: Solve for x
    x = 3,554,400,218.75/74,116.91
  6. Step 6: Final answer
    x = 47,956.67

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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.