Home / 80,210.25-120,271.23-54,938.86

Finding the Fourth Proportional to 80,210.25, 120,271.23 and 54,938.86

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Solution

The fourth proportional to 80,210.25, 120,271.23 and 54,938.86 is: 82,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,210.25 : 120,271.23 = 54,938.86 : x
  2. Step 2: Convert to fraction form
    80,210.25/120,271.23 = 54,938.86/x
  3. Step 3: Cross multiply
    80,210.25x = 120,271.23 × 54,938.86
  4. Step 4: Simplify right side
    80,210.25x = 6,607,563,966.32
  5. Step 5: Solve for x
    x = 6,607,563,966.32/80,210.25
  6. Step 6: Final answer
    x = 82,378.05

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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.