Home / 85,919.11-118,565.28-47,680.34

Finding the Fourth Proportional to 85,919.11, 118,565.28 and 47,680.34

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Solution

The fourth proportional to 85,919.11, 118,565.28 and 47,680.34 is: 65,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919.11 : 118,565.28 = 47,680.34 : x
  2. Step 2: Convert to fraction form
    85,919.11/118,565.28 = 47,680.34/x
  3. Step 3: Cross multiply
    85,919.11x = 118,565.28 × 47,680.34
  4. Step 4: Simplify right side
    85,919.11x = 5,653,232,269.77
  5. Step 5: Solve for x
    x = 5,653,232,269.77/85,919.11
  6. Step 6: Final answer
    x = 65,797.15

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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.