Home / 77,093.40-115,647.81-20,934.43

Finding the Fourth Proportional to 77,093.40, 115,647.81 and 20,934.43

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Solution

The fourth proportional to 77,093.40, 115,647.81 and 20,934.43 is: 31,403.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,093.40 : 115,647.81 = 20,934.43 : x
  2. Step 2: Convert to fraction form
    77,093.40/115,647.81 = 20,934.43/x
  3. Step 3: Cross multiply
    77,093.40x = 115,647.81 × 20,934.43
  4. Step 4: Simplify right side
    77,093.40x = 2,421,020,983.10
  5. Step 5: Solve for x
    x = 2,421,020,983.10/77,093.40
  6. Step 6: Final answer
    x = 31,403.74

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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.