Home / 78,060.70-117,091.32-18,896.28

Finding the Fourth Proportional to 78,060.70, 117,091.32 and 18,896.28

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Solution

The fourth proportional to 78,060.70, 117,091.32 and 18,896.28 is: 28,344.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,060.70 : 117,091.32 = 18,896.28 : x
  2. Step 2: Convert to fraction form
    78,060.70/117,091.32 = 18,896.28/x
  3. Step 3: Cross multiply
    78,060.70x = 117,091.32 × 18,896.28
  4. Step 4: Simplify right side
    78,060.70x = 2,212,590,368.29
  5. Step 5: Solve for x
    x = 2,212,590,368.29/78,060.70
  6. Step 6: Final answer
    x = 28,344.49

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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.