Home / 74,079.29-102,228.64-40,087.03

Finding the Fourth Proportional to 74,079.29, 102,228.64 and 40,087.03

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Solution

The fourth proportional to 74,079.29, 102,228.64 and 40,087.03 is: 55,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,079.29 : 102,228.64 = 40,087.03 : x
  2. Step 2: Convert to fraction form
    74,079.29/102,228.64 = 40,087.03/x
  3. Step 3: Cross multiply
    74,079.29x = 102,228.64 × 40,087.03
  4. Step 4: Simplify right side
    74,079.29x = 4,098,042,558.54
  5. Step 5: Solve for x
    x = 4,098,042,558.54/74,079.29
  6. Step 6: Final answer
    x = 55,319.68

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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.