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Finding the Fourth Proportional to 84,053.40, 115,993.74 and 47,754.90

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Solution

The fourth proportional to 84,053.40, 115,993.74 and 47,754.90 is: 65,901.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,053.40 : 115,993.74 = 47,754.90 : x
  2. Step 2: Convert to fraction form
    84,053.40/115,993.74 = 47,754.90/x
  3. Step 3: Cross multiply
    84,053.40x = 115,993.74 × 47,754.90
  4. Step 4: Simplify right side
    84,053.40x = 5,539,269,364.79
  5. Step 5: Solve for x
    x = 5,539,269,364.79/84,053.40
  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.