Home / 85,936.95-128,932.76-54,542.57

Finding the Fourth Proportional to 85,936.95, 128,932.76 and 54,542.57

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Solution

The fourth proportional to 85,936.95, 128,932.76 and 54,542.57 is: 81,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,936.95 : 128,932.76 = 54,542.57 : x
  2. Step 2: Convert to fraction form
    85,936.95/128,932.76 = 54,542.57/x
  3. Step 3: Cross multiply
    85,936.95x = 128,932.76 × 54,542.57
  4. Step 4: Simplify right side
    85,936.95x = 7,032,323,579.29
  5. Step 5: Solve for x
    x = 7,032,323,579.29/85,936.95
  6. Step 6: Final answer
    x = 81,831.20

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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.