Home / 51,090.45-70,416.21-48,138

Finding the Fourth Proportional to 51,090.45, 70,416.21 and 48,138

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Solution

The fourth proportional to 51,090.45, 70,416.21 and 48,138 is: 66,346.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,090.45 : 70,416.21 = 48,138 : x
  2. Step 2: Convert to fraction form
    51,090.45/70,416.21 = 48,138/x
  3. Step 3: Cross multiply
    51,090.45x = 70,416.21 × 48,138
  4. Step 4: Simplify right side
    51,090.45x = 3,389,695,516.98
  5. Step 5: Solve for x
    x = 3,389,695,516.98/51,090.45
  6. Step 6: Final answer
    x = 66,346.95

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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.