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Finding the Fourth Proportional to 35,372.80, 53,041.92 and 20,586.88

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Solution

The fourth proportional to 35,372.80, 53,041.92 and 20,586.88 is: 30,870.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,372.80 : 53,041.92 = 20,586.88 : x
  2. Step 2: Convert to fraction form
    35,372.80/53,041.92 = 20,586.88/x
  3. Step 3: Cross multiply
    35,372.80x = 53,041.92 × 20,586.88
  4. Step 4: Simplify right side
    35,372.80x = 1,091,967,642.01
  5. Step 5: Solve for x
    x = 1,091,967,642.01/35,372.80
  6. Step 6: Final answer
    x = 30,870.26

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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.