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Finding the Fourth Proportional to 84,019.20, 115,945.20 and 46,294.80

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Solution

The fourth proportional to 84,019.20, 115,945.20 and 46,294.80 is: 63,886.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019.20 : 115,945.20 = 46,294.80 : x
  2. Step 2: Convert to fraction form
    84,019.20/115,945.20 = 46,294.80/x
  3. Step 3: Cross multiply
    84,019.20x = 115,945.20 × 46,294.80
  4. Step 4: Simplify right side
    84,019.20x = 5,367,659,844.96
  5. Step 5: Solve for x
    x = 5,367,659,844.96/84,019.20
  6. Step 6: Final answer
    x = 63,886.11

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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.