Home / 78,224.16-117,274.32-28,296.48

Finding the Fourth Proportional to 78,224.16, 117,274.32 and 28,296.48

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Solution

The fourth proportional to 78,224.16, 117,274.32 and 28,296.48 is: 42,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,224.16 : 117,274.32 = 28,296.48 : x
  2. Step 2: Convert to fraction form
    78,224.16/117,274.32 = 28,296.48/x
  3. Step 3: Cross multiply
    78,224.16x = 117,274.32 × 28,296.48
  4. Step 4: Simplify right side
    78,224.16x = 3,318,450,450.39
  5. Step 5: Solve for x
    x = 3,318,450,450.39/78,224.16
  6. Step 6: Final answer
    x = 42,422.32

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1.5x scale

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.