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Finding the Fourth Proportional to 65,676.76, 90,636.10 and 35,868.76

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Solution

The fourth proportional to 65,676.76, 90,636.10 and 35,868.76 is: 49,500.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,676.76 : 90,636.10 = 35,868.76 : x
  2. Step 2: Convert to fraction form
    65,676.76/90,636.10 = 35,868.76/x
  3. Step 3: Cross multiply
    65,676.76x = 90,636.10 × 35,868.76
  4. Step 4: Simplify right side
    65,676.76x = 3,251,004,518.24
  5. Step 5: Solve for x
    x = 3,251,004,518.24/65,676.76
  6. Step 6: Final answer
    x = 49,500.07

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1.5x scale

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.