Home / 77,807.20-116,613.60-57,006.40

Finding the Fourth Proportional to 77,807.20, 116,613.60 and 57,006.40

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Solution

The fourth proportional to 77,807.20, 116,613.60 and 57,006.40 is: 85,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,807.20 : 116,613.60 = 57,006.40 : x
  2. Step 2: Convert to fraction form
    77,807.20/116,613.60 = 57,006.40/x
  3. Step 3: Cross multiply
    77,807.20x = 116,613.60 × 57,006.40
  4. Step 4: Simplify right side
    77,807.20x = 6,647,721,527.04
  5. Step 5: Solve for x
    x = 6,647,721,527.04/77,807.20
  6. Step 6: Final answer
    x = 85,438.39

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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.