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Finding the Fourth Proportional to 72,841.71, 100,520.06 and 40,576.29

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Solution

The fourth proportional to 72,841.71, 100,520.06 and 40,576.29 is: 55,994.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,841.71 : 100,520.06 = 40,576.29 : x
  2. Step 2: Convert to fraction form
    72,841.71/100,520.06 = 40,576.29/x
  3. Step 3: Cross multiply
    72,841.71x = 100,520.06 × 40,576.29
  4. Step 4: Simplify right side
    72,841.71x = 4,078,730,902.50
  5. Step 5: Solve for x
    x = 4,078,730,902.50/72,841.71
  6. Step 6: Final answer
    x = 55,994.44

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1.5x scale

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.