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Finding the Fourth Proportional to 84,328.80, 126,500.40 and 28,924.80

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Solution

The fourth proportional to 84,328.80, 126,500.40 and 28,924.80 is: 43,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,328.80 : 126,500.40 = 28,924.80 : x
  2. Step 2: Convert to fraction form
    84,328.80/126,500.40 = 28,924.80/x
  3. Step 3: Cross multiply
    84,328.80x = 126,500.40 × 28,924.80
  4. Step 4: Simplify right side
    84,328.80x = 3,658,998,769.92
  5. Step 5: Solve for x
    x = 3,658,998,769.92/84,328.80
  6. Step 6: Final answer
    x = 43,389.67

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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.