Home / 78,216.23-117,323.67-28,277.48

Finding the Fourth Proportional to 78,216.23, 117,323.67 and 28,277.48

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Solution

The fourth proportional to 78,216.23, 117,323.67 and 28,277.48 is: 42,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,216.23 : 117,323.67 = 28,277.48 : x
  2. Step 2: Convert to fraction form
    78,216.23/117,323.67 = 28,277.48/x
  3. Step 3: Cross multiply
    78,216.23x = 117,323.67 × 28,277.48
  4. Step 4: Simplify right side
    78,216.23x = 3,317,617,731.95
  5. Step 5: Solve for x
    x = 3,317,617,731.95/78,216.23
  6. Step 6: Final answer
    x = 42,415.98

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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.