Home / 72,179,789.06-108,276,045.95-20,364,845.60

Finding the Fourth Proportional to 72,179,789.06, 108,276,045.95 and 20,364,845.60

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Solution

The fourth proportional to 72,179,789.06, 108,276,045.95 and 20,364,845.60 is: 30,549,063.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179,789.06 : 108,276,045.95 = 20,364,845.60 : x
  2. Step 2: Convert to fraction form
    72,179,789.06/108,276,045.95 = 20,364,845.60/x
  3. Step 3: Cross multiply
    72,179,789.06x = 108,276,045.95 × 20,364,845.60
  4. Step 4: Simplify right side
    72,179,789.06x = 2,205,024,957,307,050.50
  5. Step 5: Solve for x
    x = 2,205,024,957,307,050.50/72,179,789.06
  6. Step 6: Final answer
    x = 30,549,063.47

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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.