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Finding the Fourth Proportional to 84,959.40, 117,211.26 and 54,742.32

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Solution

The fourth proportional to 84,959.40, 117,211.26 and 54,742.32 is: 75,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,959.40 : 117,211.26 = 54,742.32 : x
  2. Step 2: Convert to fraction form
    84,959.40/117,211.26 = 54,742.32/x
  3. Step 3: Cross multiply
    84,959.40x = 117,211.26 × 54,742.32
  4. Step 4: Simplify right side
    84,959.40x = 6,416,416,302.52
  5. Step 5: Solve for x
    x = 6,416,416,302.52/84,959.40
  6. Step 6: Final answer
    x = 75,523.32

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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.