Home / 79,340,918.12-118,957,045.72-40,403,999.32

Finding the Fourth Proportional to 79,340,918.12, 118,957,045.72 and 40,403,999.32

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Solution

The fourth proportional to 79,340,918.12, 118,957,045.72 and 40,403,999.32 is: 60,578,330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,340,918.12 : 118,957,045.72 = 40,403,999.32 : x
  2. Step 2: Convert to fraction form
    79,340,918.12/118,957,045.72 = 40,403,999.32/x
  3. Step 3: Cross multiply
    79,340,918.12x = 118,957,045.72 × 40,403,999.32
  4. Step 4: Simplify right side
    79,340,918.12x = 4,806,340,394,380,089
  5. Step 5: Solve for x
    x = 4,806,340,394,380,089/79,340,918.12
  6. Step 6: Final answer
    x = 60,578,330.93

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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.