Home / 78,056.64-117,085.26-18,892.23

Finding the Fourth Proportional to 78,056.64, 117,085.26 and 18,892.23

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Solution

The fourth proportional to 78,056.64, 117,085.26 and 18,892.23 is: 28,338.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,056.64 : 117,085.26 = 18,892.23 : x
  2. Step 2: Convert to fraction form
    78,056.64/117,085.26 = 18,892.23/x
  3. Step 3: Cross multiply
    78,056.64x = 117,085.26 × 18,892.23
  4. Step 4: Simplify right side
    78,056.64x = 2,212,001,661.53
  5. Step 5: Solve for x
    x = 2,212,001,661.53/78,056.64
  6. Step 6: Final answer
    x = 28,338.42

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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.