Home / 28,347,401.12-42,527,859.60-9,178,163.84

Finding the Fourth Proportional to 28,347,401.12, 42,527,859.60 and 9,178,163.84

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Solution

The fourth proportional to 28,347,401.12, 42,527,859.60 and 9,178,163.84 is: 13,769,433.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347,401.12 : 42,527,859.60 = 9,178,163.84 : x
  2. Step 2: Convert to fraction form
    28,347,401.12/42,527,859.60 = 9,178,163.84/x
  3. Step 3: Cross multiply
    28,347,401.12x = 42,527,859.60 × 9,178,163.84
  4. Step 4: Simplify right side
    28,347,401.12x = 390,327,663,173,316.88
  5. Step 5: Solve for x
    x = 390,327,663,173,316.88/28,347,401.12
  6. Step 6: Final answer
    x = 13,769,433.80

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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.