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Finding the Fourth Proportional to 68,442.40, 102,663.60 and 56,000.80

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Solution

The fourth proportional to 68,442.40, 102,663.60 and 56,000.80 is: 84,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,442.40 : 102,663.60 = 56,000.80 : x
  2. Step 2: Convert to fraction form
    68,442.40/102,663.60 = 56,000.80/x
  3. Step 3: Cross multiply
    68,442.40x = 102,663.60 × 56,000.80
  4. Step 4: Simplify right side
    68,442.40x = 5,749,243,730.88
  5. Step 5: Solve for x
    x = 5,749,243,730.88/68,442.40
  6. Step 6: Final answer
    x = 84,001.20

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1.5x scale

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.