Home / 74,024.20-102,147.78-40,490.20

Finding the Fourth Proportional to 74,024.20, 102,147.78 and 40,490.20

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Solution

The fourth proportional to 74,024.20, 102,147.78 and 40,490.20 is: 55,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,024.20 : 102,147.78 = 40,490.20 : x
  2. Step 2: Convert to fraction form
    74,024.20/102,147.78 = 40,490.20/x
  3. Step 3: Cross multiply
    74,024.20x = 102,147.78 × 40,490.20
  4. Step 4: Simplify right side
    74,024.20x = 4,135,984,041.76
  5. Step 5: Solve for x
    x = 4,135,984,041.76/74,024.20
  6. Step 6: Final answer
    x = 55,873.40

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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.