Home / 78,276.15-117,396.79-22,121.51

Finding the Fourth Proportional to 78,276.15, 117,396.79 and 22,121.51

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Solution

The fourth proportional to 78,276.15, 117,396.79 and 22,121.51 is: 33,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,276.15 : 117,396.79 = 22,121.51 : x
  2. Step 2: Convert to fraction form
    78,276.15/117,396.79 = 22,121.51/x
  3. Step 3: Cross multiply
    78,276.15x = 117,396.79 × 22,121.51
  4. Step 4: Simplify right side
    78,276.15x = 2,596,993,746.10
  5. Step 5: Solve for x
    x = 2,596,993,746.10/78,276.15
  6. Step 6: Final answer
    x = 33,177.33

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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.