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Finding the Fourth Proportional to 43,990.27, 65,978.72 and 14,407.45

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Solution

The fourth proportional to 43,990.27, 65,978.72 and 14,407.45 is: 21,608.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,990.27 : 65,978.72 = 14,407.45 : x
  2. Step 2: Convert to fraction form
    43,990.27/65,978.72 = 14,407.45/x
  3. Step 3: Cross multiply
    43,990.27x = 65,978.72 × 14,407.45
  4. Step 4: Simplify right side
    43,990.27x = 950,584,926.51
  5. Step 5: Solve for x
    x = 950,584,926.51/43,990.27
  6. Step 6: Final answer
    x = 21,608.98

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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.