Home / 81,232.47-121,852.35-28,647.27

Finding the Fourth Proportional to 81,232.47, 121,852.35 and 28,647.27

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Solution

The fourth proportional to 81,232.47, 121,852.35 and 28,647.27 is: 42,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.47 : 121,852.35 = 28,647.27 : x
  2. Step 2: Convert to fraction form
    81,232.47/121,852.35 = 28,647.27/x
  3. Step 3: Cross multiply
    81,232.47x = 121,852.35 × 28,647.27
  4. Step 4: Simplify right side
    81,232.47x = 3,490,737,170.58
  5. Step 5: Solve for x
    x = 3,490,737,170.58/81,232.47
  6. Step 6: Final answer
    x = 42,972.19

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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.