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Finding the Fourth Proportional to 70,330.23, 105,495.35 and 21,082.23

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Solution

The fourth proportional to 70,330.23, 105,495.35 and 21,082.23 is: 31,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,330.23 : 105,495.35 = 21,082.23 : x
  2. Step 2: Convert to fraction form
    70,330.23/105,495.35 = 21,082.23/x
  3. Step 3: Cross multiply
    70,330.23x = 105,495.35 × 21,082.23
  4. Step 4: Simplify right side
    70,330.23x = 2,224,077,232.63
  5. Step 5: Solve for x
    x = 2,224,077,232.63/70,330.23
  6. Step 6: Final answer
    x = 31,623.35

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Similar ratio
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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.