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Finding the Fourth Proportional to 68,139.60, 94,049.16 and 45,479.76

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Solution

The fourth proportional to 68,139.60, 94,049.16 and 45,479.76 is: 62,773.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,139.60 : 94,049.16 = 45,479.76 : x
  2. Step 2: Convert to fraction form
    68,139.60/94,049.16 = 45,479.76/x
  3. Step 3: Cross multiply
    68,139.60x = 94,049.16 × 45,479.76
  4. Step 4: Simplify right side
    68,139.60x = 4,277,333,225.00
  5. Step 5: Solve for x
    x = 4,277,333,225.00/68,139.60
  6. Step 6: Final answer
    x = 62,773.09

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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.