Home / 72,011.26-99,377.58-40,179.48

Finding the Fourth Proportional to 72,011.26, 99,377.58 and 40,179.48

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Solution

The fourth proportional to 72,011.26, 99,377.58 and 40,179.48 is: 55,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,011.26 : 99,377.58 = 40,179.48 : x
  2. Step 2: Convert to fraction form
    72,011.26/99,377.58 = 40,179.48/x
  3. Step 3: Cross multiply
    72,011.26x = 99,377.58 × 40,179.48
  4. Step 4: Simplify right side
    72,011.26x = 3,992,939,488.06
  5. Step 5: Solve for x
    x = 3,992,939,488.06/72,011.26
  6. Step 6: Final answer
    x = 55,448.82

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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.