Home / 79,128.94-118,693.62-19,964.61

Finding the Fourth Proportional to 79,128.94, 118,693.62 and 19,964.61

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Solution

The fourth proportional to 79,128.94, 118,693.62 and 19,964.61 is: 29,946.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,128.94 : 118,693.62 = 19,964.61 : x
  2. Step 2: Convert to fraction form
    79,128.94/118,693.62 = 19,964.61/x
  3. Step 3: Cross multiply
    79,128.94x = 118,693.62 × 19,964.61
  4. Step 4: Simplify right side
    79,128.94x = 2,369,671,832.79
  5. Step 5: Solve for x
    x = 2,369,671,832.79/79,128.94
  6. Step 6: Final answer
    x = 29,946.97

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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.