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Finding the Fourth Proportional to 70,011.99, 104,987.07 and 20,080.76

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Solution

The fourth proportional to 70,011.99, 104,987.07 and 20,080.76 is: 30,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,011.99 : 104,987.07 = 20,080.76 : x
  2. Step 2: Convert to fraction form
    70,011.99/104,987.07 = 20,080.76/x
  3. Step 3: Cross multiply
    70,011.99x = 104,987.07 × 20,080.76
  4. Step 4: Simplify right side
    70,011.99x = 2,108,219,630.84
  5. Step 5: Solve for x
    x = 2,108,219,630.84/70,011.99
  6. Step 6: Final answer
    x = 30,112.27

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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.