Home / 40,690.80-61,030.35-15,742.62

Finding the Fourth Proportional to 40,690.80, 61,030.35 and 15,742.62

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Solution

The fourth proportional to 40,690.80, 61,030.35 and 15,742.62 is: 23,611.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,690.80 : 61,030.35 = 15,742.62 : x
  2. Step 2: Convert to fraction form
    40,690.80/61,030.35 = 15,742.62/x
  3. Step 3: Cross multiply
    40,690.80x = 61,030.35 × 15,742.62
  4. Step 4: Simplify right side
    40,690.80x = 960,777,608.52
  5. Step 5: Solve for x
    x = 960,777,608.52/40,690.80
  6. Step 6: Final answer
    x = 23,611.67

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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.