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Finding the Fourth Proportional to 78,817.70, 118,034.31 and 41,409.11

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Solution

The fourth proportional to 78,817.70, 118,034.31 and 41,409.11 is: 62,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.70 : 118,034.31 = 41,409.11 : x
  2. Step 2: Convert to fraction form
    78,817.70/118,034.31 = 41,409.11/x
  3. Step 3: Cross multiply
    78,817.70x = 118,034.31 × 41,409.11
  4. Step 4: Simplify right side
    78,817.70x = 4,887,695,726.56
  5. Step 5: Solve for x
    x = 4,887,695,726.56/78,817.70
  6. Step 6: Final answer
    x = 62,012.67

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1.5x scale

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.