Home / 117,579.12-176,313.78-42,689.76

Finding the Fourth Proportional to 117,579.12, 176,313.78 and 42,689.76

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Solution

The fourth proportional to 117,579.12, 176,313.78 and 42,689.76 is: 64,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,579.12 : 176,313.78 = 42,689.76 : x
  2. Step 2: Convert to fraction form
    117,579.12/176,313.78 = 42,689.76/x
  3. Step 3: Cross multiply
    117,579.12x = 176,313.78 × 42,689.76
  4. Step 4: Simplify right side
    117,579.12x = 7,526,792,952.89
  5. Step 5: Solve for x
    x = 7,526,792,952.89/117,579.12
  6. Step 6: Final answer
    x = 64,014.71

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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.