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Finding the Fourth Proportional to 51,401.87, 70,938.11 and 28,740.40

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Solution

The fourth proportional to 51,401.87, 70,938.11 and 28,740.40 is: 39,663.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,401.87 : 70,938.11 = 28,740.40 : x
  2. Step 2: Convert to fraction form
    51,401.87/70,938.11 = 28,740.40/x
  3. Step 3: Cross multiply
    51,401.87x = 70,938.11 × 28,740.40
  4. Step 4: Simplify right side
    51,401.87x = 2,038,789,656.64
  5. Step 5: Solve for x
    x = 2,038,789,656.64/51,401.87
  6. Step 6: Final answer
    x = 39,663.73

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