Home / 77,309.12-106,683.60-43,775.20

Finding the Fourth Proportional to 77,309.12, 106,683.60 and 43,775.20

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Solution

The fourth proportional to 77,309.12, 106,683.60 and 43,775.20 is: 60,408.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,309.12 : 106,683.60 = 43,775.20 : x
  2. Step 2: Convert to fraction form
    77,309.12/106,683.60 = 43,775.20/x
  3. Step 3: Cross multiply
    77,309.12x = 106,683.60 × 43,775.20
  4. Step 4: Simplify right side
    77,309.12x = 4,670,095,926.72
  5. Step 5: Solve for x
    x = 4,670,095,926.72/77,309.12
  6. Step 6: Final answer
    x = 60,408.09

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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.