Home / 87,916.64-121,324.79-47,631.41

Finding the Fourth Proportional to 87,916.64, 121,324.79 and 47,631.41

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Solution

The fourth proportional to 87,916.64, 121,324.79 and 47,631.41 is: 65,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,916.64 : 121,324.79 = 47,631.41 : x
  2. Step 2: Convert to fraction form
    87,916.64/121,324.79 = 47,631.41/x
  3. Step 3: Cross multiply
    87,916.64x = 121,324.79 × 47,631.41
  4. Step 4: Simplify right side
    87,916.64x = 5,778,869,970.87
  5. Step 5: Solve for x
    x = 5,778,869,970.87/87,916.64
  6. Step 6: Final answer
    x = 65,731.25

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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.