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Finding the Fourth Proportional to 78,291.50, 108,041.62 and 44,299.70

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Solution

The fourth proportional to 78,291.50, 108,041.62 and 44,299.70 is: 61,133.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,291.50 : 108,041.62 = 44,299.70 : x
  2. Step 2: Convert to fraction form
    78,291.50/108,041.62 = 44,299.70/x
  3. Step 3: Cross multiply
    78,291.50x = 108,041.62 × 44,299.70
  4. Step 4: Simplify right side
    78,291.50x = 4,786,211,353.51
  5. Step 5: Solve for x
    x = 4,786,211,353.51/78,291.50
  6. Step 6: Final answer
    x = 61,133.22

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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.