Home / 72,543,661.80-108,673,775.10-43,704,130.20

Finding the Fourth Proportional to 72,543,661.80, 108,673,775.10 and 43,704,130.20

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Solution

The fourth proportional to 72,543,661.80, 108,673,775.10 and 43,704,130.20 is: 65,470,817.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543,661.80 : 108,673,775.10 = 43,704,130.20 : x
  2. Step 2: Convert to fraction form
    72,543,661.80/108,673,775.10 = 43,704,130.20/x
  3. Step 3: Cross multiply
    72,543,661.80x = 108,673,775.10 × 43,704,130.20
  4. Step 4: Simplify right side
    72,543,661.80x = 4,749,492,816,295,918
  5. Step 5: Solve for x
    x = 4,749,492,816,295,918/72,543,661.80
  6. Step 6: Final answer
    x = 65,470,817.14

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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.