Home / 81,026.40-121,533.84-21,865.44

Finding the Fourth Proportional to 81,026.40, 121,533.84 and 21,865.44

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Solution

The fourth proportional to 81,026.40, 121,533.84 and 21,865.44 is: 32,796.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,026.40 : 121,533.84 = 21,865.44 : x
  2. Step 2: Convert to fraction form
    81,026.40/121,533.84 = 21,865.44/x
  3. Step 3: Cross multiply
    81,026.40x = 121,533.84 × 21,865.44
  4. Step 4: Simplify right side
    81,026.40x = 2,657,390,886.49
  5. Step 5: Solve for x
    x = 2,657,390,886.49/81,026.40
  6. Step 6: Final answer
    x = 32,796.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.