Home / 71,778,666.40-107,667,999.60-52,505,072.80

Finding the Fourth Proportional to 71,778,666.40, 107,667,999.60 and 52,505,072.80

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Solution

The fourth proportional to 71,778,666.40, 107,667,999.60 and 52,505,072.80 is: 78,757,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,778,666.40 : 107,667,999.60 = 52,505,072.80 : x
  2. Step 2: Convert to fraction form
    71,778,666.40/107,667,999.60 = 52,505,072.80/x
  3. Step 3: Cross multiply
    71,778,666.40x = 107,667,999.60 × 52,505,072.80
  4. Step 4: Simplify right side
    71,778,666.40x = 5,653,116,157,228,370
  5. Step 5: Solve for x
    x = 5,653,116,157,228,370/71,778,666.40
  6. Step 6: Final answer
    x = 78,757,609.20

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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.