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Finding the Fourth Proportional to 83,538.52, 115,281.75 and 47,239.39

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Solution

The fourth proportional to 83,538.52, 115,281.75 and 47,239.39 is: 65,189.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,538.52 : 115,281.75 = 47,239.39 : x
  2. Step 2: Convert to fraction form
    83,538.52/115,281.75 = 47,239.39/x
  3. Step 3: Cross multiply
    83,538.52x = 115,281.75 × 47,239.39
  4. Step 4: Simplify right side
    83,538.52x = 5,445,839,548.13
  5. Step 5: Solve for x
    x = 5,445,839,548.13/83,538.52
  6. Step 6: Final answer
    x = 65,189.56

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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.