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Finding the Fourth Proportional to 76,979.60, 115,485.60 and 24,394.40

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Solution

The fourth proportional to 76,979.60, 115,485.60 and 24,394.40 is: 36,596.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,979.60 : 115,485.60 = 24,394.40 : x
  2. Step 2: Convert to fraction form
    76,979.60/115,485.60 = 24,394.40/x
  3. Step 3: Cross multiply
    76,979.60x = 115,485.60 × 24,394.40
  4. Step 4: Simplify right side
    76,979.60x = 2,817,201,920.64
  5. Step 5: Solve for x
    x = 2,817,201,920.64/76,979.60
  6. Step 6: Final answer
    x = 36,596.73

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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.