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Finding the Fourth Proportional to 53,354.88, 80,069.76 and 21,790.08

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Solution

The fourth proportional to 53,354.88, 80,069.76 and 21,790.08 is: 32,700.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,354.88 : 80,069.76 = 21,790.08 : x
  2. Step 2: Convert to fraction form
    53,354.88/80,069.76 = 21,790.08/x
  3. Step 3: Cross multiply
    53,354.88x = 80,069.76 × 21,790.08
  4. Step 4: Simplify right side
    53,354.88x = 1,744,726,475.98
  5. Step 5: Solve for x
    x = 1,744,726,475.98/53,354.88
  6. Step 6: Final answer
    x = 32,700.41

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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.