Home / 80,276.41-120,379.71-42,828.13

Finding the Fourth Proportional to 80,276.41, 120,379.71 and 42,828.13

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Solution

The fourth proportional to 80,276.41, 120,379.71 and 42,828.13 is: 64,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,276.41 : 120,379.71 = 42,828.13 : x
  2. Step 2: Convert to fraction form
    80,276.41/120,379.71 = 42,828.13/x
  3. Step 3: Cross multiply
    80,276.41x = 120,379.71 × 42,828.13
  4. Step 4: Simplify right side
    80,276.41x = 5,155,637,869.24
  5. Step 5: Solve for x
    x = 5,155,637,869.24/80,276.41
  6. Step 6: Final answer
    x = 64,223.57

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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.