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Finding the Fourth Proportional to 67,384.80, 100,882.80 and 60,386.40

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Solution

The fourth proportional to 67,384.80, 100,882.80 and 60,386.40 is: 90,405.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,384.80 : 100,882.80 = 60,386.40 : x
  2. Step 2: Convert to fraction form
    67,384.80/100,882.80 = 60,386.40/x
  3. Step 3: Cross multiply
    67,384.80x = 100,882.80 × 60,386.40
  4. Step 4: Simplify right side
    67,384.80x = 6,091,949,113.92
  5. Step 5: Solve for x
    x = 6,091,949,113.92/67,384.80
  6. Step 6: Final answer
    x = 90,405.39

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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.