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Finding the Fourth Proportional to 68,397.60, 102,610.80 and 28,934.40

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Solution

The fourth proportional to 68,397.60, 102,610.80 and 28,934.40 is: 43,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,397.60 : 102,610.80 = 28,934.40 : x
  2. Step 2: Convert to fraction form
    68,397.60/102,610.80 = 28,934.40/x
  3. Step 3: Cross multiply
    68,397.60x = 102,610.80 × 28,934.40
  4. Step 4: Simplify right side
    68,397.60x = 2,968,981,931.52
  5. Step 5: Solve for x
    x = 2,968,981,931.52/68,397.60
  6. Step 6: Final answer
    x = 43,407.69

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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.