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Finding the Fourth Proportional to 53,312.52, 79,964.12 and 21,725.90

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Solution

The fourth proportional to 53,312.52, 79,964.12 and 21,725.90 is: 32,586.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,312.52 : 79,964.12 = 21,725.90 : x
  2. Step 2: Convert to fraction form
    53,312.52/79,964.12 = 21,725.90/x
  3. Step 3: Cross multiply
    53,312.52x = 79,964.12 × 21,725.90
  4. Step 4: Simplify right side
    53,312.52x = 1,737,291,966.26
  5. Step 5: Solve for x
    x = 1,737,291,966.26/53,312.52
  6. Step 6: Final answer
    x = 32,586.94

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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.