Home / 48,078.88-72,118.38-12,540.16

Finding the Fourth Proportional to 48,078.88, 72,118.38 and 12,540.16

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Solution

The fourth proportional to 48,078.88, 72,118.38 and 12,540.16 is: 18,810.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,078.88 : 72,118.38 = 12,540.16 : x
  2. Step 2: Convert to fraction form
    48,078.88/72,118.38 = 12,540.16/x
  3. Step 3: Cross multiply
    48,078.88x = 72,118.38 × 12,540.16
  4. Step 4: Simplify right side
    48,078.88x = 904,376,024.14
  5. Step 5: Solve for x
    x = 904,376,024.14/48,078.88
  6. Step 6: Final answer
    x = 18,810.26

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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.