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Finding the Fourth Proportional to 79,653.78, 119,441.70 and 45,455.58

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Solution

The fourth proportional to 79,653.78, 119,441.70 and 45,455.58 is: 68,161.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653.78 : 119,441.70 = 45,455.58 : x
  2. Step 2: Convert to fraction form
    79,653.78/119,441.70 = 45,455.58/x
  3. Step 3: Cross multiply
    79,653.78x = 119,441.70 × 45,455.58
  4. Step 4: Simplify right side
    79,653.78x = 5,429,291,749.69
  5. Step 5: Solve for x
    x = 5,429,291,749.69/79,653.78
  6. Step 6: Final answer
    x = 68,161.13

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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.