Home / 74,020.78-102,151.08-40,486.78

Finding the Fourth Proportional to 74,020.78, 102,151.08 and 40,486.78

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Solution

The fourth proportional to 74,020.78, 102,151.08 and 40,486.78 is: 55,873.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,020.78 : 102,151.08 = 40,486.78 : x
  2. Step 2: Convert to fraction form
    74,020.78/102,151.08 = 40,486.78/x
  3. Step 3: Cross multiply
    74,020.78x = 102,151.08 × 40,486.78
  4. Step 4: Simplify right side
    74,020.78x = 4,135,768,302.72
  5. Step 5: Solve for x
    x = 4,135,768,302.72/74,020.78
  6. Step 6: Final answer
    x = 55,873.07

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1.5x scale

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.