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Finding the Fourth Proportional to 70,333.88, 105,500.84 and 21,085.88

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Solution

The fourth proportional to 70,333.88, 105,500.84 and 21,085.88 is: 31,628.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,333.88 : 105,500.84 = 21,085.88 : x
  2. Step 2: Convert to fraction form
    70,333.88/105,500.84 = 21,085.88/x
  3. Step 3: Cross multiply
    70,333.88x = 105,500.84 × 21,085.88
  4. Step 4: Simplify right side
    70,333.88x = 2,224,578,052.14
  5. Step 5: Solve for x
    x = 2,224,578,052.14/70,333.88
  6. Step 6: Final answer
    x = 31,628.83

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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.