Home / 80,961.64-121,483.76-54,611.16

Finding the Fourth Proportional to 80,961.64, 121,483.76 and 54,611.16

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Solution

The fourth proportional to 80,961.64, 121,483.76 and 54,611.16 is: 81,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,961.64 : 121,483.76 = 54,611.16 : x
  2. Step 2: Convert to fraction form
    80,961.64/121,483.76 = 54,611.16/x
  3. Step 3: Cross multiply
    80,961.64x = 121,483.76 × 54,611.16
  4. Step 4: Simplify right side
    80,961.64x = 6,634,369,054.76
  5. Step 5: Solve for x
    x = 6,634,369,054.76/80,961.64
  6. Step 6: Final answer
    x = 81,944.60

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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.