Home / 72,539,511.20-108,809,266.80-18,686,823.20

Finding the Fourth Proportional to 72,539,511.20, 108,809,266.80 and 18,686,823.20

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Solution

The fourth proportional to 72,539,511.20, 108,809,266.80 and 18,686,823.20 is: 28,030,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539,511.20 : 108,809,266.80 = 18,686,823.20 : x
  2. Step 2: Convert to fraction form
    72,539,511.20/108,809,266.80 = 18,686,823.20/x
  3. Step 3: Cross multiply
    72,539,511.20x = 108,809,266.80 × 18,686,823.20
  4. Step 4: Simplify right side
    72,539,511.20x = 2,033,299,531,213,229.50
  5. Step 5: Solve for x
    x = 2,033,299,531,213,229.50/72,539,511.20
  6. Step 6: Final answer
    x = 28,030,234.80

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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.