Home / 72,618.04-100,212.96-40,789

Finding the Fourth Proportional to 72,618.04, 100,212.96 and 40,789

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Solution

The fourth proportional to 72,618.04, 100,212.96 and 40,789 is: 56,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,618.04 : 100,212.96 = 40,789 : x
  2. Step 2: Convert to fraction form
    72,618.04/100,212.96 = 40,789/x
  3. Step 3: Cross multiply
    72,618.04x = 100,212.96 × 40,789
  4. Step 4: Simplify right side
    72,618.04x = 4,087,586,425.44
  5. Step 5: Solve for x
    x = 4,087,586,425.44/72,618.04
  6. Step 6: Final answer
    x = 56,288.86

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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.