Home / 78,050.84-117,076.27-18,886.51

Finding the Fourth Proportional to 78,050.84, 117,076.27 and 18,886.51

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Solution

The fourth proportional to 78,050.84, 117,076.27 and 18,886.51 is: 28,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.84 : 117,076.27 = 18,886.51 : x
  2. Step 2: Convert to fraction form
    78,050.84/117,076.27 = 18,886.51/x
  3. Step 3: Cross multiply
    78,050.84x = 117,076.27 × 18,886.51
  4. Step 4: Simplify right side
    78,050.84x = 2,211,162,144.12
  5. Step 5: Solve for x
    x = 2,211,162,144.12/78,050.84
  6. Step 6: Final answer
    x = 28,329.77

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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.