Home / 30,711,519.18-42,382,942.47-18,163,330.47

Finding the Fourth Proportional to 30,711,519.18, 42,382,942.47 and 18,163,330.47

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Solution

The fourth proportional to 30,711,519.18, 42,382,942.47 and 18,163,330.47 is: 25,066,014.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711,519.18 : 42,382,942.47 = 18,163,330.47 : x
  2. Step 2: Convert to fraction form
    30,711,519.18/42,382,942.47 = 18,163,330.47/x
  3. Step 3: Cross multiply
    30,711,519.18x = 42,382,942.47 × 18,163,330.47
  4. Step 4: Simplify right side
    30,711,519.18x = 769,815,390,373,608
  5. Step 5: Solve for x
    x = 769,815,390,373,608/30,711,519.18
  6. Step 6: Final answer
    x = 25,066,014.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.