Home / 28,086,014.40-42,129,021.60-7,891,256.40

Finding the Fourth Proportional to 28,086,014.40, 42,129,021.60 and 7,891,256.40

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Solution

The fourth proportional to 28,086,014.40, 42,129,021.60 and 7,891,256.40 is: 11,836,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086,014.40 : 42,129,021.60 = 7,891,256.40 : x
  2. Step 2: Convert to fraction form
    28,086,014.40/42,129,021.60 = 7,891,256.40/x
  3. Step 3: Cross multiply
    28,086,014.40x = 42,129,021.60 × 7,891,256.40
  4. Step 4: Simplify right side
    28,086,014.40x = 332,450,911,326,738.25
  5. Step 5: Solve for x
    x = 332,450,911,326,738.25/28,086,014.40
  6. Step 6: Final answer
    x = 11,836,884.60

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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.