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Finding the Fourth Proportional to 68,713.60, 103,070.40 and 51,217.60

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Solution

The fourth proportional to 68,713.60, 103,070.40 and 51,217.60 is: 76,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.60 : 103,070.40 = 51,217.60 : x
  2. Step 2: Convert to fraction form
    68,713.60/103,070.40 = 51,217.60/x
  3. Step 3: Cross multiply
    68,713.60x = 103,070.40 × 51,217.60
  4. Step 4: Simplify right side
    68,713.60x = 5,279,018,519.04
  5. Step 5: Solve for x
    x = 5,279,018,519.04/68,713.60
  6. Step 6: Final answer
    x = 76,826.40

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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.