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Finding the Fourth Proportional to 56,409.36, 84,525.02 and 20,821.69

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Solution

The fourth proportional to 56,409.36, 84,525.02 and 20,821.69 is: 31,199.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,409.36 : 84,525.02 = 20,821.69 : x
  2. Step 2: Convert to fraction form
    56,409.36/84,525.02 = 20,821.69/x
  3. Step 3: Cross multiply
    56,409.36x = 84,525.02 × 20,821.69
  4. Step 4: Simplify right side
    56,409.36x = 1,759,953,763.68
  5. Step 5: Solve for x
    x = 1,759,953,763.68/56,409.36
  6. Step 6: Final answer
    x = 31,199.68

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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.