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Finding the Fourth Proportional to 39,887.70, 59,831.28 and 19,048.02

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Solution

The fourth proportional to 39,887.70, 59,831.28 and 19,048.02 is: 28,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.70 : 59,831.28 = 19,048.02 : x
  2. Step 2: Convert to fraction form
    39,887.70/59,831.28 = 19,048.02/x
  3. Step 3: Cross multiply
    39,887.70x = 59,831.28 × 19,048.02
  4. Step 4: Simplify right side
    39,887.70x = 1,139,667,418.07
  5. Step 5: Solve for x
    x = 1,139,667,418.07/39,887.70
  6. Step 6: Final answer
    x = 28,571.90

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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.