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Finding the Fourth Proportional to 67,900.78, 102,017.22 and 64,124.08

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Solution

The fourth proportional to 67,900.78, 102,017.22 and 64,124.08 is: 96,342.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,900.78 : 102,017.22 = 64,124.08 : x
  2. Step 2: Convert to fraction form
    67,900.78/102,017.22 = 64,124.08/x
  3. Step 3: Cross multiply
    67,900.78x = 102,017.22 × 64,124.08
  4. Step 4: Simplify right side
    67,900.78x = 6,541,760,376.66
  5. Step 5: Solve for x
    x = 6,541,760,376.66/67,900.78
  6. Step 6: Final answer
    x = 96,342.93

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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.