Home / 77,768.16-116,639.04-21,613.68

Finding the Fourth Proportional to 77,768.16, 116,639.04 and 21,613.68

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Solution

The fourth proportional to 77,768.16, 116,639.04 and 21,613.68 is: 32,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,768.16 : 116,639.04 = 21,613.68 : x
  2. Step 2: Convert to fraction form
    77,768.16/116,639.04 = 21,613.68/x
  3. Step 3: Cross multiply
    77,768.16x = 116,639.04 × 21,613.68
  4. Step 4: Simplify right side
    77,768.16x = 2,520,998,886.07
  5. Step 5: Solve for x
    x = 2,520,998,886.07/77,768.16
  6. Step 6: Final answer
    x = 32,416.85

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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.