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Finding the Fourth Proportional to 81,783.78, 112,861.50 and 45,973.93

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Solution

The fourth proportional to 81,783.78, 112,861.50 and 45,973.93 is: 63,443.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,783.78 : 112,861.50 = 45,973.93 : x
  2. Step 2: Convert to fraction form
    81,783.78/112,861.50 = 45,973.93/x
  3. Step 3: Cross multiply
    81,783.78x = 112,861.50 × 45,973.93
  4. Step 4: Simplify right side
    81,783.78x = 5,188,686,716.36
  5. Step 5: Solve for x
    x = 5,188,686,716.36/81,783.78
  6. Step 6: Final answer
    x = 63,443.96

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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.