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Finding the Fourth Proportional to 70,330.74, 105,496.11 and 21,082.74

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Solution

The fourth proportional to 70,330.74, 105,496.11 and 21,082.74 is: 31,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,330.74 : 105,496.11 = 21,082.74 : x
  2. Step 2: Convert to fraction form
    70,330.74/105,496.11 = 21,082.74/x
  3. Step 3: Cross multiply
    70,330.74x = 105,496.11 × 21,082.74
  4. Step 4: Simplify right side
    70,330.74x = 2,224,147,058.14
  5. Step 5: Solve for x
    x = 2,224,147,058.14/70,330.74
  6. Step 6: Final answer
    x = 31,624.11

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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.