Home / 43,178,981.37-64,786,374.14-18,905,379.45

Finding the Fourth Proportional to 43,178,981.37, 64,786,374.14 and 18,905,379.45

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Solution

The fourth proportional to 43,178,981.37, 64,786,374.14 and 18,905,379.45 is: 28,365,907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178,981.37 : 64,786,374.14 = 18,905,379.45 : x
  2. Step 2: Convert to fraction form
    43,178,981.37/64,786,374.14 = 18,905,379.45/x
  3. Step 3: Cross multiply
    43,178,981.37x = 64,786,374.14 × 18,905,379.45
  4. Step 4: Simplify right side
    43,178,981.37x = 1,224,810,986,211,840.50
  5. Step 5: Solve for x
    x = 1,224,810,986,211,840.50/43,178,981.37
  6. Step 6: Final answer
    x = 28,365,907.38

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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.