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Finding the Fourth Proportional to 74,445.57, 102,734.88 and 40,911.57

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Solution

The fourth proportional to 74,445.57, 102,734.88 and 40,911.57 is: 56,457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,445.57 : 102,734.88 = 40,911.57 : x
  2. Step 2: Convert to fraction form
    74,445.57/102,734.88 = 40,911.57/x
  3. Step 3: Cross multiply
    74,445.57x = 102,734.88 × 40,911.57
  4. Step 4: Simplify right side
    74,445.57x = 4,203,045,234.56
  5. Step 5: Solve for x
    x = 4,203,045,234.56/74,445.57
  6. Step 6: Final answer
    x = 56,457.96

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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.