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Finding the Fourth Proportional to 77,011.95, 115,516.29 and 35,458.95

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Solution

The fourth proportional to 77,011.95, 115,516.29 and 35,458.95 is: 53,187.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,011.95 : 115,516.29 = 35,458.95 : x
  2. Step 2: Convert to fraction form
    77,011.95/115,516.29 = 35,458.95/x
  3. Step 3: Cross multiply
    77,011.95x = 115,516.29 × 35,458.95
  4. Step 4: Simplify right side
    77,011.95x = 4,096,086,351.30
  5. Step 5: Solve for x
    x = 4,096,086,351.30/77,011.95
  6. Step 6: Final answer
    x = 53,187.67

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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.