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Finding the Fourth Proportional to 81,578.67, 112,577.88 and 45,768.66

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Solution

The fourth proportional to 81,578.67, 112,577.88 and 45,768.66 is: 63,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,578.67 : 112,577.88 = 45,768.66 : x
  2. Step 2: Convert to fraction form
    81,578.67/112,577.88 = 45,768.66/x
  3. Step 3: Cross multiply
    81,578.67x = 112,577.88 × 45,768.66
  4. Step 4: Simplify right side
    81,578.67x = 5,152,538,713.24
  5. Step 5: Solve for x
    x = 5,152,538,713.24/81,578.67
  6. Step 6: Final answer
    x = 63,160.37

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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.