Home / 85,639.21-118,181.23-47,398.84

Finding the Fourth Proportional to 85,639.21, 118,181.23 and 47,398.84

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Solution

The fourth proportional to 85,639.21, 118,181.23 and 47,398.84 is: 65,409.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.21 : 118,181.23 = 47,398.84 : x
  2. Step 2: Convert to fraction form
    85,639.21/118,181.23 = 47,398.84/x
  3. Step 3: Cross multiply
    85,639.21x = 118,181.23 × 47,398.84
  4. Step 4: Simplify right side
    85,639.21x = 5,601,652,797.82
  5. Step 5: Solve for x
    x = 5,601,652,797.82/85,639.21
  6. Step 6: Final answer
    x = 65,409.91

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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.