Home / 87,938.56-121,354.91-47,653.31

Finding the Fourth Proportional to 87,938.56, 121,354.91 and 47,653.31

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Solution

The fourth proportional to 87,938.56, 121,354.91 and 47,653.31 is: 65,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,938.56 : 121,354.91 = 47,653.31 : x
  2. Step 2: Convert to fraction form
    87,938.56/121,354.91 = 47,653.31/x
  3. Step 3: Cross multiply
    87,938.56x = 121,354.91 × 47,653.31
  4. Step 4: Simplify right side
    87,938.56x = 5,782,963,390.07
  5. Step 5: Solve for x
    x = 5,782,963,390.07/87,938.56
  6. Step 6: Final answer
    x = 65,761.41

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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.