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Finding the Fourth Proportional to 43,699.63, 65,398.86 and 26,821.45

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Solution

The fourth proportional to 43,699.63, 65,398.86 and 26,821.45 is: 40,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,699.63 : 65,398.86 = 26,821.45 : x
  2. Step 2: Convert to fraction form
    43,699.63/65,398.86 = 26,821.45/x
  3. Step 3: Cross multiply
    43,699.63x = 65,398.86 × 26,821.45
  4. Step 4: Simplify right side
    43,699.63x = 1,754,092,253.55
  5. Step 5: Solve for x
    x = 1,754,092,253.55/43,699.63
  6. Step 6: Final answer
    x = 40,139.75

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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.