Home / 78,928.04-108,923.40-43,120.77

Finding the Fourth Proportional to 78,928.04, 108,923.40 and 43,120.77

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Solution

The fourth proportional to 78,928.04, 108,923.40 and 43,120.77 is: 59,508.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.04 : 108,923.40 = 43,120.77 : x
  2. Step 2: Convert to fraction form
    78,928.04/108,923.40 = 43,120.77/x
  3. Step 3: Cross multiply
    78,928.04x = 108,923.40 × 43,120.77
  4. Step 4: Simplify right side
    78,928.04x = 4,696,860,879.02
  5. Step 5: Solve for x
    x = 4,696,860,879.02/78,928.04
  6. Step 6: Final answer
    x = 59,508.14

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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.