Home / 77,373.76-115,905.12-40,360

Finding the Fourth Proportional to 77,373.76, 115,905.12 and 40,360

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Solution

The fourth proportional to 77,373.76, 115,905.12 and 40,360 is: 60,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,373.76 : 115,905.12 = 40,360 : x
  2. Step 2: Convert to fraction form
    77,373.76/115,905.12 = 40,360/x
  3. Step 3: Cross multiply
    77,373.76x = 115,905.12 × 40,360
  4. Step 4: Simplify right side
    77,373.76x = 4,677,930,643.20
  5. Step 5: Solve for x
    x = 4,677,930,643.20/77,373.76
  6. Step 6: Final answer
    x = 60,458.88

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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.