Home / 79,178.12-118,778.10-26,602.64

Finding the Fourth Proportional to 79,178.12, 118,778.10 and 26,602.64

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Solution

The fourth proportional to 79,178.12, 118,778.10 and 26,602.64 is: 39,907.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.12 : 118,778.10 = 26,602.64 : x
  2. Step 2: Convert to fraction form
    79,178.12/118,778.10 = 26,602.64/x
  3. Step 3: Cross multiply
    79,178.12x = 118,778.10 × 26,602.64
  4. Step 4: Simplify right side
    79,178.12x = 3,159,811,034.18
  5. Step 5: Solve for x
    x = 3,159,811,034.18/79,178.12
  6. Step 6: Final answer
    x = 39,907.63

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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.