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Finding the Fourth Proportional to 81,699.93, 112,739.15 and 45,402.44

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Solution

The fourth proportional to 81,699.93, 112,739.15 and 45,402.44 is: 62,651.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,699.93 : 112,739.15 = 45,402.44 : x
  2. Step 2: Convert to fraction form
    81,699.93/112,739.15 = 45,402.44/x
  3. Step 3: Cross multiply
    81,699.93x = 112,739.15 × 45,402.44
  4. Step 4: Simplify right side
    81,699.93x = 5,118,632,493.53
  5. Step 5: Solve for x
    x = 5,118,632,493.53/81,699.93
  6. Step 6: Final answer
    x = 62,651.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.