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Finding the Fourth Proportional to 68,900.94, 103,255.20 and 37,242.78

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Solution

The fourth proportional to 68,900.94, 103,255.20 and 37,242.78 is: 55,812.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,900.94 : 103,255.20 = 37,242.78 : x
  2. Step 2: Convert to fraction form
    68,900.94/103,255.20 = 37,242.78/x
  3. Step 3: Cross multiply
    68,900.94x = 103,255.20 × 37,242.78
  4. Step 4: Simplify right side
    68,900.94x = 3,845,510,697.46
  5. Step 5: Solve for x
    x = 3,845,510,697.46/68,900.94
  6. Step 6: Final answer
    x = 55,812.17

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1.5x scale

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.