Home / 74,401.43-102,668.63-42,126.75

Finding the Fourth Proportional to 74,401.43, 102,668.63 and 42,126.75

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Solution

The fourth proportional to 74,401.43, 102,668.63 and 42,126.75 is: 58,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,401.43 : 102,668.63 = 42,126.75 : x
  2. Step 2: Convert to fraction form
    74,401.43/102,668.63 = 42,126.75/x
  3. Step 3: Cross multiply
    74,401.43x = 102,668.63 × 42,126.75
  4. Step 4: Simplify right side
    74,401.43x = 4,325,095,498.22
  5. Step 5: Solve for x
    x = 4,325,095,498.22/74,401.43
  6. Step 6: Final answer
    x = 58,131.89

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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.