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Finding the Fourth Proportional to 82,698.40, 124,047.60 and 27,287.20

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Solution

The fourth proportional to 82,698.40, 124,047.60 and 27,287.20 is: 40,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,698.40 : 124,047.60 = 27,287.20 : x
  2. Step 2: Convert to fraction form
    82,698.40/124,047.60 = 27,287.20/x
  3. Step 3: Cross multiply
    82,698.40x = 124,047.60 × 27,287.20
  4. Step 4: Simplify right side
    82,698.40x = 3,384,911,670.72
  5. Step 5: Solve for x
    x = 3,384,911,670.72/82,698.40
  6. Step 6: Final answer
    x = 40,930.80

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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.