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Finding the Fourth Proportional to 70,373.35, 105,566.96 and 20,453.88

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Solution

The fourth proportional to 70,373.35, 105,566.96 and 20,453.88 is: 30,682.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.35 : 105,566.96 = 20,453.88 : x
  2. Step 2: Convert to fraction form
    70,373.35/105,566.96 = 20,453.88/x
  3. Step 3: Cross multiply
    70,373.35x = 105,566.96 × 20,453.88
  4. Step 4: Simplify right side
    70,373.35x = 2,159,254,093.45
  5. Step 5: Solve for x
    x = 2,159,254,093.45/70,373.35
  6. Step 6: Final answer
    x = 30,682.84

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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.