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Finding the Fourth Proportional to 40,456.40, 60,673.80 and 12,376.40

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Solution

The fourth proportional to 40,456.40, 60,673.80 and 12,376.40 is: 18,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,456.40 : 60,673.80 = 12,376.40 : x
  2. Step 2: Convert to fraction form
    40,456.40/60,673.80 = 12,376.40/x
  3. Step 3: Cross multiply
    40,456.40x = 60,673.80 × 12,376.40
  4. Step 4: Simplify right side
    40,456.40x = 750,923,218.32
  5. Step 5: Solve for x
    x = 750,923,218.32/40,456.40
  6. Step 6: Final answer
    x = 18,561.30

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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.