Home / 84,880.68-127,196.39-42,702.78

Finding the Fourth Proportional to 84,880.68, 127,196.39 and 42,702.78

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Solution

The fourth proportional to 84,880.68, 127,196.39 and 42,702.78 is: 63,991.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,880.68 : 127,196.39 = 42,702.78 : x
  2. Step 2: Convert to fraction form
    84,880.68/127,196.39 = 42,702.78/x
  3. Step 3: Cross multiply
    84,880.68x = 127,196.39 × 42,702.78
  4. Step 4: Simplify right side
    84,880.68x = 5,431,639,458.96
  5. Step 5: Solve for x
    x = 5,431,639,458.96/84,880.68
  6. Step 6: Final answer
    x = 63,991.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.