Home / 71,563.34-107,332.85-18,978.14

Finding the Fourth Proportional to 71,563.34, 107,332.85 and 18,978.14

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Solution

The fourth proportional to 71,563.34, 107,332.85 and 18,978.14 is: 28,463.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,563.34 : 107,332.85 = 18,978.14 : x
  2. Step 2: Convert to fraction form
    71,563.34/107,332.85 = 18,978.14/x
  3. Step 3: Cross multiply
    71,563.34x = 107,332.85 × 18,978.14
  4. Step 4: Simplify right side
    71,563.34x = 2,036,977,222.34
  5. Step 5: Solve for x
    x = 2,036,977,222.34/71,563.34
  6. Step 6: Final answer
    x = 28,463.98

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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.