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Finding the Fourth Proportional to 43,989.68, 65,970.63 and 14,400.71

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Solution

The fourth proportional to 43,989.68, 65,970.63 and 14,400.71 is: 21,596.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,989.68 : 65,970.63 = 14,400.71 : x
  2. Step 2: Convert to fraction form
    43,989.68/65,970.63 = 14,400.71/x
  3. Step 3: Cross multiply
    43,989.68x = 65,970.63 × 14,400.71
  4. Step 4: Simplify right side
    43,989.68x = 950,023,973.72
  5. Step 5: Solve for x
    x = 950,023,973.72/43,989.68
  6. Step 6: Final answer
    x = 21,596.52

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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.