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Finding the Fourth Proportional to 53,095.76, 79,679.82 and 21,930.80

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Solution

The fourth proportional to 53,095.76, 79,679.82 and 21,930.80 is: 32,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,095.76 : 79,679.82 = 21,930.80 : x
  2. Step 2: Convert to fraction form
    53,095.76/79,679.82 = 21,930.80/x
  3. Step 3: Cross multiply
    53,095.76x = 79,679.82 × 21,930.80
  4. Step 4: Simplify right side
    53,095.76x = 1,747,442,196.46
  5. Step 5: Solve for x
    x = 1,747,442,196.46/53,095.76
  6. Step 6: Final answer
    x = 32,911.14

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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.