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Finding the Fourth Proportional to 84,043.73, 115,978.86 and 45,803.63

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Solution

The fourth proportional to 84,043.73, 115,978.86 and 45,803.63 is: 63,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,043.73 : 115,978.86 = 45,803.63 : x
  2. Step 2: Convert to fraction form
    84,043.73/115,978.86 = 45,803.63/x
  3. Step 3: Cross multiply
    84,043.73x = 115,978.86 × 45,803.63
  4. Step 4: Simplify right side
    84,043.73x = 5,312,252,791.26
  5. Step 5: Solve for x
    x = 5,312,252,791.26/84,043.73
  6. Step 6: Final answer
    x = 63,208.20

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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.