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Finding the Fourth Proportional to 70,614.16, 105,921.15 and 18,023.65

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Solution

The fourth proportional to 70,614.16, 105,921.15 and 18,023.65 is: 27,035.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,614.16 : 105,921.15 = 18,023.65 : x
  2. Step 2: Convert to fraction form
    70,614.16/105,921.15 = 18,023.65/x
  3. Step 3: Cross multiply
    70,614.16x = 105,921.15 × 18,023.65
  4. Step 4: Simplify right side
    70,614.16x = 1,909,085,735.20
  5. Step 5: Solve for x
    x = 1,909,085,735.20/70,614.16
  6. Step 6: Final answer
    x = 27,035.45

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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.