Home / 78,120.60-107,813.06-44,135.32

Finding the Fourth Proportional to 78,120.60, 107,813.06 and 44,135.32

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Solution

The fourth proportional to 78,120.60, 107,813.06 and 44,135.32 is: 60,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.60 : 107,813.06 = 44,135.32 : x
  2. Step 2: Convert to fraction form
    78,120.60/107,813.06 = 44,135.32/x
  3. Step 3: Cross multiply
    78,120.60x = 107,813.06 × 44,135.32
  4. Step 4: Simplify right side
    78,120.60x = 4,758,363,903.28
  5. Step 5: Solve for x
    x = 4,758,363,903.28/78,120.60
  6. Step 6: Final answer
    x = 60,910.49

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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.