Home / 77,320,840.78-106,699,890.63-42,511,460.14

Finding the Fourth Proportional to 77,320,840.78, 106,699,890.63 and 42,511,460.14

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Solution

The fourth proportional to 77,320,840.78, 106,699,890.63 and 42,511,460.14 is: 58,664,237.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,320,840.78 : 106,699,890.63 = 42,511,460.14 : x
  2. Step 2: Convert to fraction form
    77,320,840.78/106,699,890.63 = 42,511,460.14/x
  3. Step 3: Cross multiply
    77,320,840.78x = 106,699,890.63 × 42,511,460.14
  4. Step 4: Simplify right side
    77,320,840.78x = 4,535,968,147,459,604
  5. Step 5: Solve for x
    x = 4,535,968,147,459,604/77,320,840.78
  6. Step 6: Final answer
    x = 58,664,237.24

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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.