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Finding the Fourth Proportional to 70,200.15, 105,300.30 and 17,609.64

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Solution

The fourth proportional to 70,200.15, 105,300.30 and 17,609.64 is: 26,414.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,200.15 : 105,300.30 = 17,609.64 : x
  2. Step 2: Convert to fraction form
    70,200.15/105,300.30 = 17,609.64/x
  3. Step 3: Cross multiply
    70,200.15x = 105,300.30 × 17,609.64
  4. Step 4: Simplify right side
    70,200.15x = 1,854,299,980.02
  5. Step 5: Solve for x
    x = 1,854,299,980.02/70,200.15
  6. Step 6: Final answer
    x = 26,414.47

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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.