Home / 74,177.78-102,365.20-40,187.12

Finding the Fourth Proportional to 74,177.78, 102,365.20 and 40,187.12

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Solution

The fourth proportional to 74,177.78, 102,365.20 and 40,187.12 is: 55,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,177.78 : 102,365.20 = 40,187.12 : x
  2. Step 2: Convert to fraction form
    74,177.78/102,365.20 = 40,187.12/x
  3. Step 3: Cross multiply
    74,177.78x = 102,365.20 × 40,187.12
  4. Step 4: Simplify right side
    74,177.78x = 4,113,762,576.22
  5. Step 5: Solve for x
    x = 4,113,762,576.22/74,177.78
  6. Step 6: Final answer
    x = 55,458.16

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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.