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Finding the Fourth Proportional to 53,330, 79,982.69 and 15,886.68

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Solution

The fourth proportional to 53,330, 79,982.69 and 15,886.68 is: 23,826.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,330 : 79,982.69 = 15,886.68 : x
  2. Step 2: Convert to fraction form
    53,330/79,982.69 = 15,886.68/x
  3. Step 3: Cross multiply
    53,330x = 79,982.69 × 15,886.68
  4. Step 4: Simplify right side
    53,330x = 1,270,659,401.57
  5. Step 5: Solve for x
    x = 1,270,659,401.57/53,330
  6. Step 6: Final answer
    x = 23,826.35

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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.