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Finding the Fourth Proportional to 109,029.60, 163,422.90 and 42,447.60

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Solution

The fourth proportional to 109,029.60, 163,422.90 and 42,447.60 is: 63,624.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,029.60 : 163,422.90 = 42,447.60 : x
  2. Step 2: Convert to fraction form
    109,029.60/163,422.90 = 42,447.60/x
  3. Step 3: Cross multiply
    109,029.60x = 163,422.90 × 42,447.60
  4. Step 4: Simplify right side
    109,029.60x = 6,936,909,890.04
  5. Step 5: Solve for x
    x = 6,936,909,890.04/109,029.60
  6. Step 6: Final answer
    x = 63,624.10

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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.