Home / 80,774.40-121,111.92-30,152.64

Finding the Fourth Proportional to 80,774.40, 121,111.92 and 30,152.64

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Solution

The fourth proportional to 80,774.40, 121,111.92 and 30,152.64 is: 45,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774.40 : 121,111.92 = 30,152.64 : x
  2. Step 2: Convert to fraction form
    80,774.40/121,111.92 = 30,152.64/x
  3. Step 3: Cross multiply
    80,774.40x = 121,111.92 × 30,152.64
  4. Step 4: Simplify right side
    80,774.40x = 3,651,844,123.47
  5. Step 5: Solve for x
    x = 3,651,844,123.47/80,774.40
  6. Step 6: Final answer
    x = 45,210.41

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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.