Home / 74,087.12-102,239.19-42,256.54

Finding the Fourth Proportional to 74,087.12, 102,239.19 and 42,256.54

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Solution

The fourth proportional to 74,087.12, 102,239.19 and 42,256.54 is: 58,313.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,087.12 : 102,239.19 = 42,256.54 : x
  2. Step 2: Convert to fraction form
    74,087.12/102,239.19 = 42,256.54/x
  3. Step 3: Cross multiply
    74,087.12x = 102,239.19 × 42,256.54
  4. Step 4: Simplify right side
    74,087.12x = 4,320,274,421.80
  5. Step 5: Solve for x
    x = 4,320,274,421.80/74,087.12
  6. Step 6: Final answer
    x = 58,313.43

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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.