Home / 72,171.62-99,599.01-40,339.70

Finding the Fourth Proportional to 72,171.62, 99,599.01 and 40,339.70

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Solution

The fourth proportional to 72,171.62, 99,599.01 and 40,339.70 is: 55,670.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171.62 : 99,599.01 = 40,339.70 : x
  2. Step 2: Convert to fraction form
    72,171.62/99,599.01 = 40,339.70/x
  3. Step 3: Cross multiply
    72,171.62x = 99,599.01 × 40,339.70
  4. Step 4: Simplify right side
    72,171.62x = 4,017,794,183.70
  5. Step 5: Solve for x
    x = 4,017,794,183.70/72,171.62
  6. Step 6: Final answer
    x = 55,670.00

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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.