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Finding the Fourth Proportional to 81,744.82, 112,804.21 and 47,756.45

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Solution

The fourth proportional to 81,744.82, 112,804.21 and 47,756.45 is: 65,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,744.82 : 112,804.21 = 47,756.45 : x
  2. Step 2: Convert to fraction form
    81,744.82/112,804.21 = 47,756.45/x
  3. Step 3: Cross multiply
    81,744.82x = 112,804.21 × 47,756.45
  4. Step 4: Simplify right side
    81,744.82x = 5,387,128,614.65
  5. Step 5: Solve for x
    x = 5,387,128,614.65/81,744.82
  6. Step 6: Final answer
    x = 65,901.77

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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.