Home / 78,740.20-118,110.30-28,798.69

Finding the Fourth Proportional to 78,740.20, 118,110.30 and 28,798.69

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Solution

The fourth proportional to 78,740.20, 118,110.30 and 28,798.69 is: 43,198.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,740.20 : 118,110.30 = 28,798.69 : x
  2. Step 2: Convert to fraction form
    78,740.20/118,110.30 = 28,798.69/x
  3. Step 3: Cross multiply
    78,740.20x = 118,110.30 × 28,798.69
  4. Step 4: Simplify right side
    78,740.20x = 3,401,421,895.69
  5. Step 5: Solve for x
    x = 3,401,421,895.69/78,740.20
  6. Step 6: Final answer
    x = 43,198.03

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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.