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Finding the Fourth Proportional to 92,219.60, 138,329.40 and 29,890.10

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Solution

The fourth proportional to 92,219.60, 138,329.40 and 29,890.10 is: 44,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,219.60 : 138,329.40 = 29,890.10 : x
  2. Step 2: Convert to fraction form
    92,219.60/138,329.40 = 29,890.10/x
  3. Step 3: Cross multiply
    92,219.60x = 138,329.40 × 29,890.10
  4. Step 4: Simplify right side
    92,219.60x = 4,134,679,598.94
  5. Step 5: Solve for x
    x = 4,134,679,598.94/92,219.60
  6. Step 6: Final answer
    x = 44,835.15

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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.