Home / 84,986.20-127,220.10-49,821.40

Finding the Fourth Proportional to 84,986.20, 127,220.10 and 49,821.40

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Solution

The fourth proportional to 84,986.20, 127,220.10 and 49,821.40 is: 74,580.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,986.20 : 127,220.10 = 49,821.40 : x
  2. Step 2: Convert to fraction form
    84,986.20/127,220.10 = 49,821.40/x
  3. Step 3: Cross multiply
    84,986.20x = 127,220.10 × 49,821.40
  4. Step 4: Simplify right side
    84,986.20x = 6,338,283,490.14
  5. Step 5: Solve for x
    x = 6,338,283,490.14/84,986.20
  6. Step 6: Final answer
    x = 74,580.15

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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.