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Finding the Fourth Proportional to 68,477.20, 102,821.40 and 37,373.20

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Solution

The fourth proportional to 68,477.20, 102,821.40 and 37,373.20 is: 56,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,477.20 : 102,821.40 = 37,373.20 : x
  2. Step 2: Convert to fraction form
    68,477.20/102,821.40 = 37,373.20/x
  3. Step 3: Cross multiply
    68,477.20x = 102,821.40 × 37,373.20
  4. Step 4: Simplify right side
    68,477.20x = 3,842,764,746.48
  5. Step 5: Solve for x
    x = 3,842,764,746.48/68,477.20
  6. Step 6: Final answer
    x = 56,117.43

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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.