Home / 82,481,789.09-123,830,812.38-55,309,667.40

Finding the Fourth Proportional to 82,481,789.09, 123,830,812.38 and 55,309,667.40

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Solution

The fourth proportional to 82,481,789.09, 123,830,812.38 and 55,309,667.40 is: 83,037,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,481,789.09 : 123,830,812.38 = 55,309,667.40 : x
  2. Step 2: Convert to fraction form
    82,481,789.09/123,830,812.38 = 55,309,667.40/x
  3. Step 3: Cross multiply
    82,481,789.09x = 123,830,812.38 × 55,309,667.40
  4. Step 4: Simplify right side
    82,481,789.09x = 6,849,041,047,073,968
  5. Step 5: Solve for x
    x = 6,849,041,047,073,968/82,481,789.09
  6. Step 6: Final answer
    x = 83,037,008.81

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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.