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Finding the Fourth Proportional to 45,924.60, 68,870.70 and 20,976.60

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Solution

The fourth proportional to 45,924.60, 68,870.70 and 20,976.60 is: 31,457.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,924.60 : 68,870.70 = 20,976.60 : x
  2. Step 2: Convert to fraction form
    45,924.60/68,870.70 = 20,976.60/x
  3. Step 3: Cross multiply
    45,924.60x = 68,870.70 × 20,976.60
  4. Step 4: Simplify right side
    45,924.60x = 1,444,673,125.62
  5. Step 5: Solve for x
    x = 1,444,673,125.62/45,924.60
  6. Step 6: Final answer
    x = 31,457.50

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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.