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Finding the Fourth Proportional to 78,683.80, 108,623.02 and 50,032.28

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Solution

The fourth proportional to 78,683.80, 108,623.02 and 50,032.28 is: 69,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,683.80 : 108,623.02 = 50,032.28 : x
  2. Step 2: Convert to fraction form
    78,683.80/108,623.02 = 50,032.28/x
  3. Step 3: Cross multiply
    78,683.80x = 108,623.02 × 50,032.28
  4. Step 4: Simplify right side
    78,683.80x = 5,434,657,351.09
  5. Step 5: Solve for x
    x = 5,434,657,351.09/78,683.80
  6. Step 6: Final answer
    x = 69,069.58

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1.5x scale

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.