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Finding the Fourth Proportional to 67,368.30, 100,943.10 and 42,363.60

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Solution

The fourth proportional to 67,368.30, 100,943.10 and 42,363.60 is: 63,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,368.30 : 100,943.10 = 42,363.60 : x
  2. Step 2: Convert to fraction form
    67,368.30/100,943.10 = 42,363.60/x
  3. Step 3: Cross multiply
    67,368.30x = 100,943.10 × 42,363.60
  4. Step 4: Simplify right side
    67,368.30x = 4,276,313,111.16
  5. Step 5: Solve for x
    x = 4,276,313,111.16/67,368.30
  6. Step 6: Final answer
    x = 63,476.64

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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.