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Finding the Fourth Proportional to 57,377.85, 85,680.42 and 46,868.85

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Solution

The fourth proportional to 57,377.85, 85,680.42 and 46,868.85 is: 69,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,377.85 : 85,680.42 = 46,868.85 : x
  2. Step 2: Convert to fraction form
    57,377.85/85,680.42 = 46,868.85/x
  3. Step 3: Cross multiply
    57,377.85x = 85,680.42 × 46,868.85
  4. Step 4: Simplify right side
    57,377.85x = 4,015,742,752.92
  5. Step 5: Solve for x
    x = 4,015,742,752.92/57,377.85
  6. Step 6: Final answer
    x = 69,987.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.