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Finding the Fourth Proportional to 53,329, 79,981.19 and 15,885.68

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Solution

The fourth proportional to 53,329, 79,981.19 and 15,885.68 is: 23,824.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,329 : 79,981.19 = 15,885.68 : x
  2. Step 2: Convert to fraction form
    53,329/79,981.19 = 15,885.68/x
  3. Step 3: Cross multiply
    53,329x = 79,981.19 × 15,885.68
  4. Step 4: Simplify right side
    53,329x = 1,270,555,590.36
  5. Step 5: Solve for x
    x = 1,270,555,590.36/53,329
  6. Step 6: Final answer
    x = 23,824.85

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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.