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Finding the Fourth Proportional to 79,886, 119,668.58 and 39,784.16

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Solution

The fourth proportional to 79,886, 119,668.58 and 39,784.16 is: 59,596.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,886 : 119,668.58 = 39,784.16 : x
  2. Step 2: Convert to fraction form
    79,886/119,668.58 = 39,784.16/x
  3. Step 3: Cross multiply
    79,886x = 119,668.58 × 39,784.16
  4. Step 4: Simplify right side
    79,886x = 4,760,913,933.69
  5. Step 5: Solve for x
    x = 4,760,913,933.69/79,886
  6. Step 6: Final answer
    x = 59,596.35

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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.