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Finding the Fourth Proportional to 81,237.98, 112,118.92 and 53,025.68

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Solution

The fourth proportional to 81,237.98, 112,118.92 and 53,025.68 is: 73,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,237.98 : 112,118.92 = 53,025.68 : x
  2. Step 2: Convert to fraction form
    81,237.98/112,118.92 = 53,025.68/x
  3. Step 3: Cross multiply
    81,237.98x = 112,118.92 × 53,025.68
  4. Step 4: Simplify right side
    81,237.98x = 5,945,181,973.87
  5. Step 5: Solve for x
    x = 5,945,181,973.87/81,237.98
  6. Step 6: Final answer
    x = 73,182.30

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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.