Home / 78,262.44-117,289.82-42,632.36

Finding the Fourth Proportional to 78,262.44, 117,289.82 and 42,632.36

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Solution

The fourth proportional to 78,262.44, 117,289.82 and 42,632.36 is: 63,891.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,262.44 : 117,289.82 = 42,632.36 : x
  2. Step 2: Convert to fraction form
    78,262.44/117,289.82 = 42,632.36/x
  3. Step 3: Cross multiply
    78,262.44x = 117,289.82 × 42,632.36
  4. Step 4: Simplify right side
    78,262.44x = 5,000,341,030.96
  5. Step 5: Solve for x
    x = 5,000,341,030.96/78,262.44
  6. Step 6: Final answer
    x = 63,891.96

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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.