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Finding the Fourth Proportional to 40,742.40, 61,123.02 and 32,915.40

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Solution

The fourth proportional to 40,742.40, 61,123.02 and 32,915.40 is: 49,380.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,742.40 : 61,123.02 = 32,915.40 : x
  2. Step 2: Convert to fraction form
    40,742.40/61,123.02 = 32,915.40/x
  3. Step 3: Cross multiply
    40,742.40x = 61,123.02 × 32,915.40
  4. Step 4: Simplify right side
    40,742.40x = 2,011,888,652.51
  5. Step 5: Solve for x
    x = 2,011,888,652.51/40,742.40
  6. Step 6: Final answer
    x = 49,380.71

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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.