Home / 48,078.86-72,144.10-20,018.28

Finding the Fourth Proportional to 48,078.86, 72,144.10 and 20,018.28

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Solution

The fourth proportional to 48,078.86, 72,144.10 and 20,018.28 is: 30,038.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,078.86 : 72,144.10 = 20,018.28 : x
  2. Step 2: Convert to fraction form
    48,078.86/72,144.10 = 20,018.28/x
  3. Step 3: Cross multiply
    48,078.86x = 72,144.10 × 20,018.28
  4. Step 4: Simplify right side
    48,078.86x = 1,444,200,794.15
  5. Step 5: Solve for x
    x = 1,444,200,794.15/48,078.86
  6. Step 6: Final answer
    x = 30,038.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.