Home / 53,089.12-79,633.68-21,890.08

Finding the Fourth Proportional to 53,089.12, 79,633.68 and 21,890.08

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Solution

The fourth proportional to 53,089.12, 79,633.68 and 21,890.08 is: 32,835.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,089.12 : 79,633.68 = 21,890.08 : x
  2. Step 2: Convert to fraction form
    53,089.12/79,633.68 = 21,890.08/x
  3. Step 3: Cross multiply
    53,089.12x = 79,633.68 × 21,890.08
  4. Step 4: Simplify right side
    53,089.12x = 1,743,187,625.89
  5. Step 5: Solve for x
    x = 1,743,187,625.89/53,089.12
  6. Step 6: Final answer
    x = 32,835.12

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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.