Home / 81,331.49-112,237.44-45,521.50

Finding the Fourth Proportional to 81,331.49, 112,237.44 and 45,521.50

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Solution

The fourth proportional to 81,331.49, 112,237.44 and 45,521.50 is: 62,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.49 : 112,237.44 = 45,521.50 : x
  2. Step 2: Convert to fraction form
    81,331.49/112,237.44 = 45,521.50/x
  3. Step 3: Cross multiply
    81,331.49x = 112,237.44 × 45,521.50
  4. Step 4: Simplify right side
    81,331.49x = 5,109,216,624.96
  5. Step 5: Solve for x
    x = 5,109,216,624.96/81,331.49
  6. Step 6: Final answer
    x = 62,819.66

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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.