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Finding the Fourth Proportional to 70,100.28, 105,150.40 and 20,852.28

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Solution

The fourth proportional to 70,100.28, 105,150.40 and 20,852.28 is: 31,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,100.28 : 105,150.40 = 20,852.28 : x
  2. Step 2: Convert to fraction form
    70,100.28/105,150.40 = 20,852.28/x
  3. Step 3: Cross multiply
    70,100.28x = 105,150.40 × 20,852.28
  4. Step 4: Simplify right side
    70,100.28x = 2,192,625,582.91
  5. Step 5: Solve for x
    x = 2,192,625,582.91/70,100.28
  6. Step 6: Final answer
    x = 31,278.41

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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.