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Finding the Fourth Proportional to 70,330.68, 105,496 and 21,082.68

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Solution

The fourth proportional to 70,330.68, 105,496 and 21,082.68 is: 31,624.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,330.68 : 105,496 = 21,082.68 : x
  2. Step 2: Convert to fraction form
    70,330.68/105,496 = 21,082.68/x
  3. Step 3: Cross multiply
    70,330.68x = 105,496 × 21,082.68
  4. Step 4: Simplify right side
    70,330.68x = 2,224,138,409.28
  5. Step 5: Solve for x
    x = 2,224,138,409.28/70,330.68
  6. Step 6: Final answer
    x = 31,624.01

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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.