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Finding the Fourth Proportional to 84,013.96, 115,939.60 and 46,288.20

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Solution

The fourth proportional to 84,013.96, 115,939.60 and 46,288.20 is: 63,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,013.96 : 115,939.60 = 46,288.20 : x
  2. Step 2: Convert to fraction form
    84,013.96/115,939.60 = 46,288.20/x
  3. Step 3: Cross multiply
    84,013.96x = 115,939.60 × 46,288.20
  4. Step 4: Simplify right side
    84,013.96x = 5,366,635,392.72
  5. Step 5: Solve for x
    x = 5,366,635,392.72/84,013.96
  6. Step 6: Final answer
    x = 63,877.90

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1.5x scale

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.