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Finding the Fourth Proportional to 83,969.91, 115,878.60 and 45,729.54

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Solution

The fourth proportional to 83,969.91, 115,878.60 and 45,729.54 is: 63,106.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,969.91 : 115,878.60 = 45,729.54 : x
  2. Step 2: Convert to fraction form
    83,969.91/115,878.60 = 45,729.54/x
  3. Step 3: Cross multiply
    83,969.91x = 115,878.60 × 45,729.54
  4. Step 4: Simplify right side
    83,969.91x = 5,299,075,073.84
  5. Step 5: Solve for x
    x = 5,299,075,073.84/83,969.91
  6. Step 6: Final answer
    x = 63,106.83

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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.