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Finding the Fourth Proportional to 40,610.40, 60,904.80 and 12,530.40

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Solution

The fourth proportional to 40,610.40, 60,904.80 and 12,530.40 is: 18,792.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,610.40 : 60,904.80 = 12,530.40 : x
  2. Step 2: Convert to fraction form
    40,610.40/60,904.80 = 12,530.40/x
  3. Step 3: Cross multiply
    40,610.40x = 60,904.80 × 12,530.40
  4. Step 4: Simplify right side
    40,610.40x = 763,161,505.92
  5. Step 5: Solve for x
    x = 763,161,505.92/40,610.40
  6. Step 6: Final answer
    x = 18,792.27

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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.