Home / 55,379.28-83,079.88-20,319.24

Finding the Fourth Proportional to 55,379.28, 83,079.88 and 20,319.24

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Solution

The fourth proportional to 55,379.28, 83,079.88 and 20,319.24 is: 30,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,379.28 : 83,079.88 = 20,319.24 : x
  2. Step 2: Convert to fraction form
    55,379.28/83,079.88 = 20,319.24/x
  3. Step 3: Cross multiply
    55,379.28x = 83,079.88 × 20,319.24
  4. Step 4: Simplify right side
    55,379.28x = 1,688,120,020.89
  5. Step 5: Solve for x
    x = 1,688,120,020.89/55,379.28
  6. Step 6: Final answer
    x = 30,482.88

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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.