Home / 80,984.61-121,465.17-31,077.27

Finding the Fourth Proportional to 80,984.61, 121,465.17 and 31,077.27

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Solution

The fourth proportional to 80,984.61, 121,465.17 and 31,077.27 is: 46,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,984.61 : 121,465.17 = 31,077.27 : x
  2. Step 2: Convert to fraction form
    80,984.61/121,465.17 = 31,077.27/x
  3. Step 3: Cross multiply
    80,984.61x = 121,465.17 × 31,077.27
  4. Step 4: Simplify right side
    80,984.61x = 3,774,805,883.69
  5. Step 5: Solve for x
    x = 3,774,805,883.69/80,984.61
  6. Step 6: Final answer
    x = 46,611.40

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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.