Home / 61,142.55-91,727.61-21,699.66

Finding the Fourth Proportional to 61,142.55, 91,727.61 and 21,699.66

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Solution

The fourth proportional to 61,142.55, 91,727.61 and 21,699.66 is: 32,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,142.55 : 91,727.61 = 21,699.66 : x
  2. Step 2: Convert to fraction form
    61,142.55/91,727.61 = 21,699.66/x
  3. Step 3: Cross multiply
    61,142.55x = 91,727.61 × 21,699.66
  4. Step 4: Simplify right side
    61,142.55x = 1,990,457,949.61
  5. Step 5: Solve for x
    x = 1,990,457,949.61/61,142.55
  6. Step 6: Final answer
    x = 32,554.38

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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.