Home / 85,356,665.76-128,035,195.47-49,201,356.72

Finding the Fourth Proportional to 85,356,665.76, 128,035,195.47 and 49,201,356.72

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Solution

The fourth proportional to 85,356,665.76, 128,035,195.47 and 49,201,356.72 is: 73,802,148.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,356,665.76 : 128,035,195.47 = 49,201,356.72 : x
  2. Step 2: Convert to fraction form
    85,356,665.76/128,035,195.47 = 49,201,356.72/x
  3. Step 3: Cross multiply
    85,356,665.76x = 128,035,195.47 × 49,201,356.72
  4. Step 4: Simplify right side
    85,356,665.76x = 6,299,505,325,034,398
  5. Step 5: Solve for x
    x = 6,299,505,325,034,398/85,356,665.76
  6. Step 6: Final answer
    x = 73,802,148.54

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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.