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Finding the Fourth Proportional to 84,860.52, 117,104.40 and 47,137.20

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Solution

The fourth proportional to 84,860.52, 117,104.40 and 47,137.20 is: 65,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,860.52 : 117,104.40 = 47,137.20 : x
  2. Step 2: Convert to fraction form
    84,860.52/117,104.40 = 47,137.20/x
  3. Step 3: Cross multiply
    84,860.52x = 117,104.40 × 47,137.20
  4. Step 4: Simplify right side
    84,860.52x = 5,519,973,523.68
  5. Step 5: Solve for x
    x = 5,519,973,523.68/84,860.52
  6. Step 6: Final answer
    x = 65,047.60

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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.