Home / 57,091,021.63-78,785,685.87-30,985,539.46

Finding the Fourth Proportional to 57,091,021.63, 78,785,685.87 and 30,985,539.46

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Solution

The fourth proportional to 57,091,021.63, 78,785,685.87 and 30,985,539.46 is: 42,760,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091,021.63 : 78,785,685.87 = 30,985,539.46 : x
  2. Step 2: Convert to fraction form
    57,091,021.63/78,785,685.87 = 30,985,539.46/x
  3. Step 3: Cross multiply
    57,091,021.63x = 78,785,685.87 × 30,985,539.46
  4. Step 4: Simplify right side
    57,091,021.63x = 2,441,216,978,408,049.50
  5. Step 5: Solve for x
    x = 2,441,216,978,408,049.50/57,091,021.63
  6. Step 6: Final answer
    x = 42,760,085.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.