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Finding the Fourth Proportional to 77,405.10, 116,107.65 and 74,452.65

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Solution

The fourth proportional to 77,405.10, 116,107.65 and 74,452.65 is: 111,678.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405.10 : 116,107.65 = 74,452.65 : x
  2. Step 2: Convert to fraction form
    77,405.10/116,107.65 = 74,452.65/x
  3. Step 3: Cross multiply
    77,405.10x = 116,107.65 × 74,452.65
  4. Step 4: Simplify right side
    77,405.10x = 8,644,522,227.77
  5. Step 5: Solve for x
    x = 8,644,522,227.77/77,405.10
  6. Step 6: Final answer
    x = 111,678.98

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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.