Home / 79,319.20-118,745.04-69,477.72

Finding the Fourth Proportional to 79,319.20, 118,745.04 and 69,477.72

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Solution

The fourth proportional to 79,319.20, 118,745.04 and 69,477.72 is: 104,011.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.20 : 118,745.04 = 69,477.72 : x
  2. Step 2: Convert to fraction form
    79,319.20/118,745.04 = 69,477.72/x
  3. Step 3: Cross multiply
    79,319.20x = 118,745.04 × 69,477.72
  4. Step 4: Simplify right side
    79,319.20x = 8,250,134,640.51
  5. Step 5: Solve for x
    x = 8,250,134,640.51/79,319.20
  6. Step 6: Final answer
    x = 104,011.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.