Home / 80,352.12-120,454.37-42,938.02

Finding the Fourth Proportional to 80,352.12, 120,454.37 and 42,938.02

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Solution

The fourth proportional to 80,352.12, 120,454.37 and 42,938.02 is: 64,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,352.12 : 120,454.37 = 42,938.02 : x
  2. Step 2: Convert to fraction form
    80,352.12/120,454.37 = 42,938.02/x
  3. Step 3: Cross multiply
    80,352.12x = 120,454.37 × 42,938.02
  4. Step 4: Simplify right side
    80,352.12x = 5,172,071,331.19
  5. Step 5: Solve for x
    x = 5,172,071,331.19/80,352.12
  6. Step 6: Final answer
    x = 64,367.58

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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.