Home / 80,818.16-111,420.33-56,586.53

Finding the Fourth Proportional to 80,818.16, 111,420.33 and 56,586.53

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Solution

The fourth proportional to 80,818.16, 111,420.33 and 56,586.53 is: 78,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,818.16 : 111,420.33 = 56,586.53 : x
  2. Step 2: Convert to fraction form
    80,818.16/111,420.33 = 56,586.53/x
  3. Step 3: Cross multiply
    80,818.16x = 111,420.33 × 56,586.53
  4. Step 4: Simplify right side
    80,818.16x = 6,304,889,289.05
  5. Step 5: Solve for x
    x = 6,304,889,289.05/80,818.16
  6. Step 6: Final answer
    x = 78,013.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.