Home / 85,621.54-127,907.28-61,725.15

Finding the Fourth Proportional to 85,621.54, 127,907.28 and 61,725.15

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Solution

The fourth proportional to 85,621.54, 127,907.28 and 61,725.15 is: 92,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,621.54 : 127,907.28 = 61,725.15 : x
  2. Step 2: Convert to fraction form
    85,621.54/127,907.28 = 61,725.15/x
  3. Step 3: Cross multiply
    85,621.54x = 127,907.28 × 61,725.15
  4. Step 4: Simplify right side
    85,621.54x = 7,895,095,795.91
  5. Step 5: Solve for x
    x = 7,895,095,795.91/85,621.54
  6. Step 6: Final answer
    x = 92,209.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.