Home / 79,124,940.60-118,676,636.75-20,827,736.43

Finding the Fourth Proportional to 79,124,940.60, 118,676,636.75 and 20,827,736.43

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Solution

The fourth proportional to 79,124,940.60, 118,676,636.75 and 20,827,736.43 is: 31,238,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124,940.60 : 118,676,636.75 = 20,827,736.43 : x
  2. Step 2: Convert to fraction form
    79,124,940.60/118,676,636.75 = 20,827,736.43/x
  3. Step 3: Cross multiply
    79,124,940.60x = 118,676,636.75 × 20,827,736.43
  4. Step 4: Simplify right side
    79,124,940.60x = 2,471,765,710,679,921
  5. Step 5: Solve for x
    x = 2,471,765,710,679,921/79,124,940.60
  6. Step 6: Final answer
    x = 31,238,768.61

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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.