Home / 85,731.21-118,298.91-49,432.28

Finding the Fourth Proportional to 85,731.21, 118,298.91 and 49,432.28

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Solution

The fourth proportional to 85,731.21, 118,298.91 and 49,432.28 is: 68,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,731.21 : 118,298.91 = 49,432.28 : x
  2. Step 2: Convert to fraction form
    85,731.21/118,298.91 = 49,432.28/x
  3. Step 3: Cross multiply
    85,731.21x = 118,298.91 × 49,432.28
  4. Step 4: Simplify right side
    85,731.21x = 5,847,784,251.32
  5. Step 5: Solve for x
    x = 5,847,784,251.32/85,731.21
  6. Step 6: Final answer
    x = 68,210.68

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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.