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Finding the Fourth Proportional to 81,759.80, 112,808.81 and 47,748.98

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Solution

The fourth proportional to 81,759.80, 112,808.81 and 47,748.98 is: 65,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,759.80 : 112,808.81 = 47,748.98 : x
  2. Step 2: Convert to fraction form
    81,759.80/112,808.81 = 47,748.98/x
  3. Step 3: Cross multiply
    81,759.80x = 112,808.81 × 47,748.98
  4. Step 4: Simplify right side
    81,759.80x = 5,386,505,167.84
  5. Step 5: Solve for x
    x = 5,386,505,167.84/81,759.80
  6. Step 6: Final answer
    x = 65,882.08

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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.