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Finding the Fourth Proportional to 81,999.69, 113,159.57 and 46,189.70

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Solution

The fourth proportional to 81,999.69, 113,159.57 and 46,189.70 is: 63,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,999.69 : 113,159.57 = 46,189.70 : x
  2. Step 2: Convert to fraction form
    81,999.69/113,159.57 = 46,189.70/x
  3. Step 3: Cross multiply
    81,999.69x = 113,159.57 × 46,189.70
  4. Step 4: Simplify right side
    81,999.69x = 5,226,805,988.27
  5. Step 5: Solve for x
    x = 5,226,805,988.27/81,999.69
  6. Step 6: Final answer
    x = 63,741.78

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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.