Home / 85,734.60-118,286.28-55,543.20

Finding the Fourth Proportional to 85,734.60, 118,286.28 and 55,543.20

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Solution

The fourth proportional to 85,734.60, 118,286.28 and 55,543.20 is: 76,631.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,734.60 : 118,286.28 = 55,543.20 : x
  2. Step 2: Convert to fraction form
    85,734.60/118,286.28 = 55,543.20/x
  3. Step 3: Cross multiply
    85,734.60x = 118,286.28 × 55,543.20
  4. Step 4: Simplify right side
    85,734.60x = 6,569,998,507.30
  5. Step 5: Solve for x
    x = 6,569,998,507.30/85,734.60
  6. Step 6: Final answer
    x = 76,631.82

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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.