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Finding the Fourth Proportional to 43,970.60, 65,961.30 and 14,380.40

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Solution

The fourth proportional to 43,970.60, 65,961.30 and 14,380.40 is: 21,572.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,970.60 : 65,961.30 = 14,380.40 : x
  2. Step 2: Convert to fraction form
    43,970.60/65,961.30 = 14,380.40/x
  3. Step 3: Cross multiply
    43,970.60x = 65,961.30 × 14,380.40
  4. Step 4: Simplify right side
    43,970.60x = 948,549,878.52
  5. Step 5: Solve for x
    x = 948,549,878.52/43,970.60
  6. Step 6: Final answer
    x = 21,572.37

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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.