Home / 77,138.94-106,441.10-43,145.67

Finding the Fourth Proportional to 77,138.94, 106,441.10 and 43,145.67

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Solution

The fourth proportional to 77,138.94, 106,441.10 and 43,145.67 is: 59,535.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,138.94 : 106,441.10 = 43,145.67 : x
  2. Step 2: Convert to fraction form
    77,138.94/106,441.10 = 43,145.67/x
  3. Step 3: Cross multiply
    77,138.94x = 106,441.10 × 43,145.67
  4. Step 4: Simplify right side
    77,138.94x = 4,592,471,827.10
  5. Step 5: Solve for x
    x = 4,592,471,827.10/77,138.94
  6. Step 6: Final answer
    x = 59,535.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.