Home / 74,133.09-102,304.50-40,142.34

Finding the Fourth Proportional to 74,133.09, 102,304.50 and 40,142.34

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Solution

The fourth proportional to 74,133.09, 102,304.50 and 40,142.34 is: 55,396.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,133.09 : 102,304.50 = 40,142.34 : x
  2. Step 2: Convert to fraction form
    74,133.09/102,304.50 = 40,142.34/x
  3. Step 3: Cross multiply
    74,133.09x = 102,304.50 × 40,142.34
  4. Step 4: Simplify right side
    74,133.09x = 4,106,742,022.53
  5. Step 5: Solve for x
    x = 4,106,742,022.53/74,133.09
  6. Step 6: Final answer
    x = 55,396.88

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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.