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Finding the Fourth Proportional to 82,698.91, 124,033.55 and 21,909.59

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Solution

The fourth proportional to 82,698.91, 124,033.55 and 21,909.59 is: 32,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,698.91 : 124,033.55 = 21,909.59 : x
  2. Step 2: Convert to fraction form
    82,698.91/124,033.55 = 21,909.59/x
  3. Step 3: Cross multiply
    82,698.91x = 124,033.55 × 21,909.59
  4. Step 4: Simplify right side
    82,698.91x = 2,717,523,497.03
  5. Step 5: Solve for x
    x = 2,717,523,497.03/82,698.91
  6. Step 6: Final answer
    x = 32,860.45

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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.