Home / 85,669.73-128,428.27-40,663.32

Finding the Fourth Proportional to 85,669.73, 128,428.27 and 40,663.32

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Solution

The fourth proportional to 85,669.73, 128,428.27 and 40,663.32 is: 60,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.73 : 128,428.27 = 40,663.32 : x
  2. Step 2: Convert to fraction form
    85,669.73/128,428.27 = 40,663.32/x
  3. Step 3: Cross multiply
    85,669.73x = 128,428.27 × 40,663.32
  4. Step 4: Simplify right side
    85,669.73x = 5,222,320,372.49
  5. Step 5: Solve for x
    x = 5,222,320,372.49/85,669.73
  6. Step 6: Final answer
    x = 60,958.76

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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.