Home / 40,120.65-55,364.36-21,967.89

Finding the Fourth Proportional to 40,120.65, 55,364.36 and 21,967.89

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Solution

The fourth proportional to 40,120.65, 55,364.36 and 21,967.89 is: 30,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,120.65 : 55,364.36 = 21,967.89 : x
  2. Step 2: Convert to fraction form
    40,120.65/55,364.36 = 21,967.89/x
  3. Step 3: Cross multiply
    40,120.65x = 55,364.36 × 21,967.89
  4. Step 4: Simplify right side
    40,120.65x = 1,216,238,060.56
  5. Step 5: Solve for x
    x = 1,216,238,060.56/40,120.65
  6. Step 6: Final answer
    x = 30,314.52

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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.