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Finding the Fourth Proportional to 78,290.50, 108,040.89 and 44,756.50

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Solution

The fourth proportional to 78,290.50, 108,040.89 and 44,756.50 is: 61,763.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,290.50 : 108,040.89 = 44,756.50 : x
  2. Step 2: Convert to fraction form
    78,290.50/108,040.89 = 44,756.50/x
  3. Step 3: Cross multiply
    78,290.50x = 108,040.89 × 44,756.50
  4. Step 4: Simplify right side
    78,290.50x = 4,835,532,093.29
  5. Step 5: Solve for x
    x = 4,835,532,093.29/78,290.50
  6. Step 6: Final answer
    x = 61,763.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.