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Finding the Fourth Proportional to 76,888.52, 106,103.75 and 45,078.60

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Solution

The fourth proportional to 76,888.52, 106,103.75 and 45,078.60 is: 62,207.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,888.52 : 106,103.75 = 45,078.60 : x
  2. Step 2: Convert to fraction form
    76,888.52/106,103.75 = 45,078.60/x
  3. Step 3: Cross multiply
    76,888.52x = 106,103.75 × 45,078.60
  4. Step 4: Simplify right side
    76,888.52x = 4,783,008,279.36
  5. Step 5: Solve for x
    x = 4,783,008,279.36/76,888.52
  6. Step 6: Final answer
    x = 62,207.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.