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Finding the Fourth Proportional to 70,409.56, 105,548.72 and 35,308.20

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Solution

The fourth proportional to 70,409.56, 105,548.72 and 35,308.20 is: 52,929.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,409.56 : 105,548.72 = 35,308.20 : x
  2. Step 2: Convert to fraction form
    70,409.56/105,548.72 = 35,308.20/x
  3. Step 3: Cross multiply
    70,409.56x = 105,548.72 × 35,308.20
  4. Step 4: Simplify right side
    70,409.56x = 3,726,735,315.50
  5. Step 5: Solve for x
    x = 3,726,735,315.50/70,409.56
  6. Step 6: Final answer
    x = 52,929.39

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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.