Home / 84,827.20-127,240.80-49,806.40

Finding the Fourth Proportional to 84,827.20, 127,240.80 and 49,806.40

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Solution

The fourth proportional to 84,827.20, 127,240.80 and 49,806.40 is: 74,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,827.20 : 127,240.80 = 49,806.40 : x
  2. Step 2: Convert to fraction form
    84,827.20/127,240.80 = 49,806.40/x
  3. Step 3: Cross multiply
    84,827.20x = 127,240.80 × 49,806.40
  4. Step 4: Simplify right side
    84,827.20x = 6,337,406,181.12
  5. Step 5: Solve for x
    x = 6,337,406,181.12/84,827.20
  6. Step 6: Final answer
    x = 74,709.60

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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.