Home / 72,443.20-108,405.60-66,222.40

Finding the Fourth Proportional to 72,443.20, 108,405.60 and 66,222.40

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Solution

The fourth proportional to 72,443.20, 108,405.60 and 66,222.40 is: 99,096.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,443.20 : 108,405.60 = 66,222.40 : x
  2. Step 2: Convert to fraction form
    72,443.20/108,405.60 = 66,222.40/x
  3. Step 3: Cross multiply
    72,443.20x = 108,405.60 × 66,222.40
  4. Step 4: Simplify right side
    72,443.20x = 7,178,879,005.44
  5. Step 5: Solve for x
    x = 7,178,879,005.44/72,443.20
  6. Step 6: Final answer
    x = 99,096.66

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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.