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Finding the Fourth Proportional to 57,890.52, 79,970.76 and 53,604

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Solution

The fourth proportional to 57,890.52, 79,970.76 and 53,604 is: 74,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,890.52 : 79,970.76 = 53,604 : x
  2. Step 2: Convert to fraction form
    57,890.52/79,970.76 = 53,604/x
  3. Step 3: Cross multiply
    57,890.52x = 79,970.76 × 53,604
  4. Step 4: Simplify right side
    57,890.52x = 4,286,752,619.04
  5. Step 5: Solve for x
    x = 4,286,752,619.04/57,890.52
  6. Step 6: Final answer
    x = 74,049.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.