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Finding the Fourth Proportional to 55,477.76, 83,212.80 and 20,410.88

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Solution

The fourth proportional to 55,477.76, 83,212.80 and 20,410.88 is: 30,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,477.76 : 83,212.80 = 20,410.88 : x
  2. Step 2: Convert to fraction form
    55,477.76/83,212.80 = 20,410.88/x
  3. Step 3: Cross multiply
    55,477.76x = 83,212.80 × 20,410.88
  4. Step 4: Simplify right side
    55,477.76x = 1,698,446,475.26
  5. Step 5: Solve for x
    x = 1,698,446,475.26/55,477.76
  6. Step 6: Final answer
    x = 30,614.91

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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.