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Finding the Fourth Proportional to 65,996.32, 90,569.96 and 65,529.76

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Solution

The fourth proportional to 65,996.32, 90,569.96 and 65,529.76 is: 89,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,996.32 : 90,569.96 = 65,529.76 : x
  2. Step 2: Convert to fraction form
    65,996.32/90,569.96 = 65,529.76/x
  3. Step 3: Cross multiply
    65,996.32x = 90,569.96 × 65,529.76
  4. Step 4: Simplify right side
    65,996.32x = 5,935,027,742.01
  5. Step 5: Solve for x
    x = 5,935,027,742.01/65,996.32
  6. Step 6: Final answer
    x = 89,929.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.