Home / 74,131.38-102,301.38-40,140.18

Finding the Fourth Proportional to 74,131.38, 102,301.38 and 40,140.18

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Solution

The fourth proportional to 74,131.38, 102,301.38 and 40,140.18 is: 55,393.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,131.38 : 102,301.38 = 40,140.18 : x
  2. Step 2: Convert to fraction form
    74,131.38/102,301.38 = 40,140.18/x
  3. Step 3: Cross multiply
    74,131.38x = 102,301.38 × 40,140.18
  4. Step 4: Simplify right side
    74,131.38x = 4,106,395,807.45
  5. Step 5: Solve for x
    x = 4,106,395,807.45/74,131.38
  6. Step 6: Final answer
    x = 55,393.49

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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.