Home / 48,078.12-72,121.28-12,544.16

Finding the Fourth Proportional to 48,078.12, 72,121.28 and 12,544.16

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Solution

The fourth proportional to 48,078.12, 72,121.28 and 12,544.16 is: 18,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,078.12 : 72,121.28 = 12,544.16 : x
  2. Step 2: Convert to fraction form
    48,078.12/72,121.28 = 12,544.16/x
  3. Step 3: Cross multiply
    48,078.12x = 72,121.28 × 12,544.16
  4. Step 4: Simplify right side
    48,078.12x = 904,700,875.72
  5. Step 5: Solve for x
    x = 904,700,875.72/48,078.12
  6. Step 6: Final answer
    x = 18,817.31

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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.