Home / 76,581.01-114,875.28-20,421.63

Finding the Fourth Proportional to 76,581.01, 114,875.28 and 20,421.63

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Solution

The fourth proportional to 76,581.01, 114,875.28 and 20,421.63 is: 30,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,581.01 : 114,875.28 = 20,421.63 : x
  2. Step 2: Convert to fraction form
    76,581.01/114,875.28 = 20,421.63/x
  3. Step 3: Cross multiply
    76,581.01x = 114,875.28 × 20,421.63
  4. Step 4: Simplify right side
    76,581.01x = 2,345,940,464.31
  5. Step 5: Solve for x
    x = 2,345,940,464.31/76,581.01
  6. Step 6: Final answer
    x = 30,633.45

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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.