Home / 74,383.02-102,648.20-40,391.21

Finding the Fourth Proportional to 74,383.02, 102,648.20 and 40,391.21

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Solution

The fourth proportional to 74,383.02, 102,648.20 and 40,391.21 is: 55,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,383.02 : 102,648.20 = 40,391.21 : x
  2. Step 2: Convert to fraction form
    74,383.02/102,648.20 = 40,391.21/x
  3. Step 3: Cross multiply
    74,383.02x = 102,648.20 × 40,391.21
  4. Step 4: Simplify right side
    74,383.02x = 4,146,085,002.32
  5. Step 5: Solve for x
    x = 4,146,085,002.32/74,383.02
  6. Step 6: Final answer
    x = 55,739.67

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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.