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Finding the Fourth Proportional to 81,592.80, 112,578.88 and 47,580.96

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Solution

The fourth proportional to 81,592.80, 112,578.88 and 47,580.96 is: 65,650.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,592.80 : 112,578.88 = 47,580.96 : x
  2. Step 2: Convert to fraction form
    81,592.80/112,578.88 = 47,580.96/x
  3. Step 3: Cross multiply
    81,592.80x = 112,578.88 × 47,580.96
  4. Step 4: Simplify right side
    81,592.80x = 5,356,611,186.12
  5. Step 5: Solve for x
    x = 5,356,611,186.12/81,592.80
  6. Step 6: Final answer
    x = 65,650.54

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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.