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Finding the Fourth Proportional to 51,461.72, 71,020.44 and 28,803.32

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Solution

The fourth proportional to 51,461.72, 71,020.44 and 28,803.32 is: 39,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,461.72 : 71,020.44 = 28,803.32 : x
  2. Step 2: Convert to fraction form
    51,461.72/71,020.44 = 28,803.32/x
  3. Step 3: Cross multiply
    51,461.72x = 71,020.44 × 28,803.32
  4. Step 4: Simplify right side
    51,461.72x = 2,045,624,459.86
  5. Step 5: Solve for x
    x = 2,045,624,459.86/51,461.72
  6. Step 6: Final answer
    x = 39,750.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.