Home / 74,412.36-102,690.77-40,422.20

Finding the Fourth Proportional to 74,412.36, 102,690.77 and 40,422.20

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Solution

The fourth proportional to 74,412.36, 102,690.77 and 40,422.20 is: 55,783.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,412.36 : 102,690.77 = 40,422.20 : x
  2. Step 2: Convert to fraction form
    74,412.36/102,690.77 = 40,422.20/x
  3. Step 3: Cross multiply
    74,412.36x = 102,690.77 × 40,422.20
  4. Step 4: Simplify right side
    74,412.36x = 4,150,986,127.53
  5. Step 5: Solve for x
    x = 4,150,986,127.53/74,412.36
  6. Step 6: Final answer
    x = 55,783.56

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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.