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Finding the Fourth Proportional to 84,928.30, 127,392.45 and 61,308.70

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Solution

The fourth proportional to 84,928.30, 127,392.45 and 61,308.70 is: 91,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,928.30 : 127,392.45 = 61,308.70 : x
  2. Step 2: Convert to fraction form
    84,928.30/127,392.45 = 61,308.70/x
  3. Step 3: Cross multiply
    84,928.30x = 127,392.45 × 61,308.70
  4. Step 4: Simplify right side
    84,928.30x = 7,810,265,499.32
  5. Step 5: Solve for x
    x = 7,810,265,499.32/84,928.30
  6. Step 6: Final answer
    x = 91,963.05

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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.