Home / 72,170.62-99,597.63-40,338.70

Finding the Fourth Proportional to 72,170.62, 99,597.63 and 40,338.70

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Solution

The fourth proportional to 72,170.62, 99,597.63 and 40,338.70 is: 55,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.62 : 99,597.63 = 40,338.70 : x
  2. Step 2: Convert to fraction form
    72,170.62/99,597.63 = 40,338.70/x
  3. Step 3: Cross multiply
    72,170.62x = 99,597.63 × 40,338.70
  4. Step 4: Simplify right side
    72,170.62x = 4,017,638,917.28
  5. Step 5: Solve for x
    x = 4,017,638,917.28/72,170.62
  6. Step 6: Final answer
    x = 55,668.62

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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.