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Finding the Fourth Proportional to 84,043.88, 115,980.32 and 46,318.12

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Solution

The fourth proportional to 84,043.88, 115,980.32 and 46,318.12 is: 63,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,043.88 : 115,980.32 = 46,318.12 : x
  2. Step 2: Convert to fraction form
    84,043.88/115,980.32 = 46,318.12/x
  3. Step 3: Cross multiply
    84,043.88x = 115,980.32 × 46,318.12
  4. Step 4: Simplify right side
    84,043.88x = 5,371,990,379.40
  5. Step 5: Solve for x
    x = 5,371,990,379.40/84,043.88
  6. Step 6: Final answer
    x = 63,918.88

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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.