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Finding the Fourth Proportional to 40,534.70, 60,672.45 and 28,870.70

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Solution

The fourth proportional to 40,534.70, 60,672.45 and 28,870.70 is: 43,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,534.70 : 60,672.45 = 28,870.70 : x
  2. Step 2: Convert to fraction form
    40,534.70/60,672.45 = 28,870.70/x
  3. Step 3: Cross multiply
    40,534.70x = 60,672.45 × 28,870.70
  4. Step 4: Simplify right side
    40,534.70x = 1,751,656,102.22
  5. Step 5: Solve for x
    x = 1,751,656,102.22/40,534.70
  6. Step 6: Final answer
    x = 43,213.74

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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.