Home / 74,415.57-102,695.33-40,424.05

Finding the Fourth Proportional to 74,415.57, 102,695.33 and 40,424.05

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Solution

The fourth proportional to 74,415.57, 102,695.33 and 40,424.05 is: 55,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,415.57 : 102,695.33 = 40,424.05 : x
  2. Step 2: Convert to fraction form
    74,415.57/102,695.33 = 40,424.05/x
  3. Step 3: Cross multiply
    74,415.57x = 102,695.33 × 40,424.05
  4. Step 4: Simplify right side
    74,415.57x = 4,151,361,384.12
  5. Step 5: Solve for x
    x = 4,151,361,384.12/74,415.57
  6. Step 6: Final answer
    x = 55,786.20

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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.