Home / 78,935.64-108,912.77-48,722.23

Finding the Fourth Proportional to 78,935.64, 108,912.77 and 48,722.23

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Solution

The fourth proportional to 78,935.64, 108,912.77 and 48,722.23 is: 67,225.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,935.64 : 108,912.77 = 48,722.23 : x
  2. Step 2: Convert to fraction form
    78,935.64/108,912.77 = 48,722.23/x
  3. Step 3: Cross multiply
    78,935.64x = 108,912.77 × 48,722.23
  4. Step 4: Simplify right side
    78,935.64x = 5,306,473,029.88
  5. Step 5: Solve for x
    x = 5,306,473,029.88/78,935.64
  6. Step 6: Final answer
    x = 67,225.31

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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.