Home / 74,340.21-102,589.58-40,348.68

Finding the Fourth Proportional to 74,340.21, 102,589.58 and 40,348.68

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Solution

The fourth proportional to 74,340.21, 102,589.58 and 40,348.68 is: 55,681.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,340.21 : 102,589.58 = 40,348.68 : x
  2. Step 2: Convert to fraction form
    74,340.21/102,589.58 = 40,348.68/x
  3. Step 3: Cross multiply
    74,340.21x = 102,589.58 × 40,348.68
  4. Step 4: Simplify right side
    74,340.21x = 4,139,354,134.75
  5. Step 5: Solve for x
    x = 4,139,354,134.75/74,340.21
  6. Step 6: Final answer
    x = 55,681.23

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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.