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Finding the Fourth Proportional to 70,415.30, 105,638.95 and 23,672.90

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Solution

The fourth proportional to 70,415.30, 105,638.95 and 23,672.90 is: 35,514.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,415.30 : 105,638.95 = 23,672.90 : x
  2. Step 2: Convert to fraction form
    70,415.30/105,638.95 = 23,672.90/x
  3. Step 3: Cross multiply
    70,415.30x = 105,638.95 × 23,672.90
  4. Step 4: Simplify right side
    70,415.30x = 2,500,780,299.46
  5. Step 5: Solve for x
    x = 2,500,780,299.46/70,415.30
  6. Step 6: Final answer
    x = 35,514.73

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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.