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Finding the Fourth Proportional to 77,642.58, 116,439.30 and 33,257.55

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Solution

The fourth proportional to 77,642.58, 116,439.30 and 33,257.55 is: 49,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,642.58 : 116,439.30 = 33,257.55 : x
  2. Step 2: Convert to fraction form
    77,642.58/116,439.30 = 33,257.55/x
  3. Step 3: Cross multiply
    77,642.58x = 116,439.30 × 33,257.55
  4. Step 4: Simplify right side
    77,642.58x = 3,872,485,841.72
  5. Step 5: Solve for x
    x = 3,872,485,841.72/77,642.58
  6. Step 6: Final answer
    x = 49,875.80

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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.