Home / 42,912,432.55-64,368,648.83-12,620,295.55

Finding the Fourth Proportional to 42,912,432.55, 64,368,648.83 and 12,620,295.55

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Solution

The fourth proportional to 42,912,432.55, 64,368,648.83 and 12,620,295.55 is: 18,930,443.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,912,432.55 : 64,368,648.83 = 12,620,295.55 : x
  2. Step 2: Convert to fraction form
    42,912,432.55/64,368,648.83 = 12,620,295.55/x
  3. Step 3: Cross multiply
    42,912,432.55x = 64,368,648.83 × 12,620,295.55
  4. Step 4: Simplify right side
    42,912,432.55x = 812,351,372,388,761.75
  5. Step 5: Solve for x
    x = 812,351,372,388,761.75/42,912,432.55
  6. Step 6: Final answer
    x = 18,930,443.33

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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.