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Finding the Fourth Proportional to 60,867.42, 84,011.07 and 39,609.78

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Solution

The fourth proportional to 60,867.42, 84,011.07 and 39,609.78 is: 54,670.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,867.42 : 84,011.07 = 39,609.78 : x
  2. Step 2: Convert to fraction form
    60,867.42/84,011.07 = 39,609.78/x
  3. Step 3: Cross multiply
    60,867.42x = 84,011.07 × 39,609.78
  4. Step 4: Simplify right side
    60,867.42x = 3,327,660,000.26
  5. Step 5: Solve for x
    x = 3,327,660,000.26/60,867.42
  6. Step 6: Final answer
    x = 54,670.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.