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Finding the Fourth Proportional to 81,744.82, 112,804.22 and 47,756.46

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Solution

The fourth proportional to 81,744.82, 112,804.22 and 47,756.46 is: 65,901.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,744.82 : 112,804.22 = 47,756.46 : x
  2. Step 2: Convert to fraction form
    81,744.82/112,804.22 = 47,756.46/x
  3. Step 3: Cross multiply
    81,744.82x = 112,804.22 × 47,756.46
  4. Step 4: Simplify right side
    81,744.82x = 5,387,130,220.26
  5. Step 5: Solve for x
    x = 5,387,130,220.26/81,744.82
  6. Step 6: Final answer
    x = 65,901.79

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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.