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Finding the Fourth Proportional to 84,903.68, 117,169.92 and 47,179.52

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Solution

The fourth proportional to 84,903.68, 117,169.92 and 47,179.52 is: 65,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,903.68 : 117,169.92 = 47,179.52 : x
  2. Step 2: Convert to fraction form
    84,903.68/117,169.92 = 47,179.52/x
  3. Step 3: Cross multiply
    84,903.68x = 117,169.92 × 47,179.52
  4. Step 4: Simplify right side
    84,903.68x = 5,528,020,584.04
  5. Step 5: Solve for x
    x = 5,528,020,584.04/84,903.68
  6. Step 6: Final answer
    x = 65,109.32

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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.