Home / 79,290.14-109,421.89-43,478.01

Finding the Fourth Proportional to 79,290.14, 109,421.89 and 43,478.01

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Solution

The fourth proportional to 79,290.14, 109,421.89 and 43,478.01 is: 60,000.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,290.14 : 109,421.89 = 43,478.01 : x
  2. Step 2: Convert to fraction form
    79,290.14/109,421.89 = 43,478.01/x
  3. Step 3: Cross multiply
    79,290.14x = 109,421.89 × 43,478.01
  4. Step 4: Simplify right side
    79,290.14x = 4,757,445,918.94
  5. Step 5: Solve for x
    x = 4,757,445,918.94/79,290.14
  6. Step 6: Final answer
    x = 60,000.48

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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.