Home / 74,190.05-102,382.13-40,199.45

Finding the Fourth Proportional to 74,190.05, 102,382.13 and 40,199.45

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Solution

The fourth proportional to 74,190.05, 102,382.13 and 40,199.45 is: 55,475.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,190.05 : 102,382.13 = 40,199.45 : x
  2. Step 2: Convert to fraction form
    74,190.05/102,382.13 = 40,199.45/x
  3. Step 3: Cross multiply
    74,190.05x = 102,382.13 × 40,199.45
  4. Step 4: Simplify right side
    74,190.05x = 4,115,704,602.92
  5. Step 5: Solve for x
    x = 4,115,704,602.92/74,190.05
  6. Step 6: Final answer
    x = 55,475.16

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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.