Home / 81,285.48-112,172.99-45,475.38

Finding the Fourth Proportional to 81,285.48, 112,172.99 and 45,475.38

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Solution

The fourth proportional to 81,285.48, 112,172.99 and 45,475.38 is: 62,755.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.48 : 112,172.99 = 45,475.38 : x
  2. Step 2: Convert to fraction form
    81,285.48/112,172.99 = 45,475.38/x
  3. Step 3: Cross multiply
    81,285.48x = 112,172.99 × 45,475.38
  4. Step 4: Simplify right side
    81,285.48x = 5,101,109,118.61
  5. Step 5: Solve for x
    x = 5,101,109,118.61/81,285.48
  6. Step 6: Final answer
    x = 62,755.48

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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.