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Finding the Fourth Proportional to 83,427.45, 115,159.34 and 49,893.45

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Solution

The fourth proportional to 83,427.45, 115,159.34 and 49,893.45 is: 68,870.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,427.45 : 115,159.34 = 49,893.45 : x
  2. Step 2: Convert to fraction form
    83,427.45/115,159.34 = 49,893.45/x
  3. Step 3: Cross multiply
    83,427.45x = 115,159.34 × 49,893.45
  4. Step 4: Simplify right side
    83,427.45x = 5,745,696,772.32
  5. Step 5: Solve for x
    x = 5,745,696,772.32/83,427.45
  6. Step 6: Final answer
    x = 68,870.58

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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.