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Finding the Fourth Proportional to 78,353.65, 108,130.50 and 44,361.55

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Solution

The fourth proportional to 78,353.65, 108,130.50 and 44,361.55 is: 61,220.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,353.65 : 108,130.50 = 44,361.55 : x
  2. Step 2: Convert to fraction form
    78,353.65/108,130.50 = 44,361.55/x
  3. Step 3: Cross multiply
    78,353.65x = 108,130.50 × 44,361.55
  4. Step 4: Simplify right side
    78,353.65x = 4,796,836,582.28
  5. Step 5: Solve for x
    x = 4,796,836,582.28/78,353.65
  6. Step 6: Final answer
    x = 61,220.33

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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.