Home / 42,912,431.55-64,368,647.33-12,620,294.55

Finding the Fourth Proportional to 42,912,431.55, 64,368,647.33 and 12,620,294.55

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Solution

The fourth proportional to 42,912,431.55, 64,368,647.33 and 12,620,294.55 is: 18,930,441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,912,431.55 : 64,368,647.33 = 12,620,294.55 : x
  2. Step 2: Convert to fraction form
    42,912,431.55/64,368,647.33 = 12,620,294.55/x
  3. Step 3: Cross multiply
    42,912,431.55x = 64,368,647.33 × 12,620,294.55
  4. Step 4: Simplify right side
    42,912,431.55x = 812,351,289,026,569.62
  5. Step 5: Solve for x
    x = 812,351,289,026,569.62/42,912,431.55
  6. Step 6: Final answer
    x = 18,930,441.83

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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.