Home / 31,455,907.40-47,089,382.70-18,669,830.60

Finding the Fourth Proportional to 31,455,907.40, 47,089,382.70 and 18,669,830.60

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Solution

The fourth proportional to 31,455,907.40, 47,089,382.70 and 18,669,830.60 is: 27,948,670.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455,907.40 : 47,089,382.70 = 18,669,830.60 : x
  2. Step 2: Convert to fraction form
    31,455,907.40/47,089,382.70 = 18,669,830.60/x
  3. Step 3: Cross multiply
    31,455,907.40x = 47,089,382.70 × 18,669,830.60
  4. Step 4: Simplify right side
    31,455,907.40x = 879,150,798,067,570.75
  5. Step 5: Solve for x
    x = 879,150,798,067,570.75/31,455,907.40
  6. Step 6: Final answer
    x = 27,948,670.72

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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.