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Finding the Fourth Proportional to 87,648.94, 120,955.53 and 47,362.71

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Solution

The fourth proportional to 87,648.94, 120,955.53 and 47,362.71 is: 65,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,648.94 : 120,955.53 = 47,362.71 : x
  2. Step 2: Convert to fraction form
    87,648.94/120,955.53 = 47,362.71/x
  3. Step 3: Cross multiply
    87,648.94x = 120,955.53 × 47,362.71
  4. Step 4: Simplify right side
    87,648.94x = 5,728,781,690.29
  5. Step 5: Solve for x
    x = 5,728,781,690.29/87,648.94
  6. Step 6: Final answer
    x = 65,360.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.