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Finding the Fourth Proportional to 72,571.50, 108,755.16 and 57,714.48

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Solution

The fourth proportional to 72,571.50, 108,755.16 and 57,714.48 is: 86,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,571.50 : 108,755.16 = 57,714.48 : x
  2. Step 2: Convert to fraction form
    72,571.50/108,755.16 = 57,714.48/x
  3. Step 3: Cross multiply
    72,571.50x = 108,755.16 × 57,714.48
  4. Step 4: Simplify right side
    72,571.50x = 6,276,747,506.72
  5. Step 5: Solve for x
    x = 6,276,747,506.72/72,571.50
  6. Step 6: Final answer
    x = 86,490.53

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1.5x scale

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.