Home / 81,159.87-112,003.10-45,351.39

Finding the Fourth Proportional to 81,159.87, 112,003.10 and 45,351.39

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Solution

The fourth proportional to 81,159.87, 112,003.10 and 45,351.39 is: 62,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,159.87 : 112,003.10 = 45,351.39 : x
  2. Step 2: Convert to fraction form
    81,159.87/112,003.10 = 45,351.39/x
  3. Step 3: Cross multiply
    81,159.87x = 112,003.10 × 45,351.39
  4. Step 4: Simplify right side
    81,159.87x = 5,079,496,887.73
  5. Step 5: Solve for x
    x = 5,079,496,887.73/81,159.87
  6. Step 6: Final answer
    x = 62,586.31

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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.