Home / 77,201.28-115,842.24-42,134.40

Finding the Fourth Proportional to 77,201.28, 115,842.24 and 42,134.40

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Solution

The fourth proportional to 77,201.28, 115,842.24 and 42,134.40 is: 63,223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,201.28 : 115,842.24 = 42,134.40 : x
  2. Step 2: Convert to fraction form
    77,201.28/115,842.24 = 42,134.40/x
  3. Step 3: Cross multiply
    77,201.28x = 115,842.24 × 42,134.40
  4. Step 4: Simplify right side
    77,201.28x = 4,880,943,277.06
  5. Step 5: Solve for x
    x = 4,880,943,277.06/77,201.28
  6. Step 6: Final answer
    x = 63,223.61

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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.