Home / 77,439.85-116,145.93-20,514.16

Finding the Fourth Proportional to 77,439.85, 116,145.93 and 20,514.16

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Solution

The fourth proportional to 77,439.85, 116,145.93 and 20,514.16 is: 30,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,439.85 : 116,145.93 = 20,514.16 : x
  2. Step 2: Convert to fraction form
    77,439.85/116,145.93 = 20,514.16/x
  3. Step 3: Cross multiply
    77,439.85x = 116,145.93 × 20,514.16
  4. Step 4: Simplify right side
    77,439.85x = 2,382,636,191.37
  5. Step 5: Solve for x
    x = 2,382,636,191.37/77,439.85
  6. Step 6: Final answer
    x = 30,767.57

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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.