Home / 72,900,172.20-109,366,004.70-21,787,357.80

Finding the Fourth Proportional to 72,900,172.20, 109,366,004.70 and 21,787,357.80

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Solution

The fourth proportional to 72,900,172.20, 109,366,004.70 and 21,787,357.80 is: 32,685,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,900,172.20 : 109,366,004.70 = 21,787,357.80 : x
  2. Step 2: Convert to fraction form
    72,900,172.20/109,366,004.70 = 21,787,357.80/x
  3. Step 3: Cross multiply
    72,900,172.20x = 109,366,004.70 × 21,787,357.80
  4. Step 4: Simplify right side
    72,900,172.20x = 2,382,796,275,555,382
  5. Step 5: Solve for x
    x = 2,382,796,275,555,382/72,900,172.20
  6. Step 6: Final answer
    x = 32,685,742.76

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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.