Home / 76,421.30-114,437.55-72,922.10

Finding the Fourth Proportional to 76,421.30, 114,437.55 and 72,922.10

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Solution

The fourth proportional to 76,421.30, 114,437.55 and 72,922.10 is: 109,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,421.30 : 114,437.55 = 72,922.10 : x
  2. Step 2: Convert to fraction form
    76,421.30/114,437.55 = 72,922.10/x
  3. Step 3: Cross multiply
    76,421.30x = 114,437.55 × 72,922.10
  4. Step 4: Simplify right side
    76,421.30x = 8,345,026,464.86
  5. Step 5: Solve for x
    x = 8,345,026,464.86/76,421.30
  6. Step 6: Final answer
    x = 109,197.65

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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.