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Finding the Fourth Proportional to 68,999.10, 103,498.65 and 56,533.20

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Solution

The fourth proportional to 68,999.10, 103,498.65 and 56,533.20 is: 84,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,999.10 : 103,498.65 = 56,533.20 : x
  2. Step 2: Convert to fraction form
    68,999.10/103,498.65 = 56,533.20/x
  3. Step 3: Cross multiply
    68,999.10x = 103,498.65 × 56,533.20
  4. Step 4: Simplify right side
    68,999.10x = 5,851,109,880.18
  5. Step 5: Solve for x
    x = 5,851,109,880.18/68,999.10
  6. Step 6: Final answer
    x = 84,799.80

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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.