Home / 43,079.04-64,635.24-20,890.80

Finding the Fourth Proportional to 43,079.04, 64,635.24 and 20,890.80

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Solution

The fourth proportional to 43,079.04, 64,635.24 and 20,890.80 is: 31,344.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,079.04 : 64,635.24 = 20,890.80 : x
  2. Step 2: Convert to fraction form
    43,079.04/64,635.24 = 20,890.80/x
  3. Step 3: Cross multiply
    43,079.04x = 64,635.24 × 20,890.80
  4. Step 4: Simplify right side
    43,079.04x = 1,350,281,871.79
  5. Step 5: Solve for x
    x = 1,350,281,871.79/43,079.04
  6. Step 6: Final answer
    x = 31,344.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.