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Finding the Fourth Proportional to 40,558.59, 60,838.02 and 12,478.46

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Solution

The fourth proportional to 40,558.59, 60,838.02 and 12,478.46 is: 18,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,558.59 : 60,838.02 = 12,478.46 : x
  2. Step 2: Convert to fraction form
    40,558.59/60,838.02 = 12,478.46/x
  3. Step 3: Cross multiply
    40,558.59x = 60,838.02 × 12,478.46
  4. Step 4: Simplify right side
    40,558.59x = 759,164,494.86
  5. Step 5: Solve for x
    x = 759,164,494.86/40,558.59
  6. Step 6: Final answer
    x = 18,717.72

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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.