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Finding the Fourth Proportional to 53,486.88, 73,838.64 and 34,639.20

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Solution

The fourth proportional to 53,486.88, 73,838.64 and 34,639.20 is: 47,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,486.88 : 73,838.64 = 34,639.20 : x
  2. Step 2: Convert to fraction form
    53,486.88/73,838.64 = 34,639.20/x
  3. Step 3: Cross multiply
    53,486.88x = 73,838.64 × 34,639.20
  4. Step 4: Simplify right side
    53,486.88x = 2,557,711,418.69
  5. Step 5: Solve for x
    x = 2,557,711,418.69/53,486.88
  6. Step 6: Final answer
    x = 47,819.42

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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.