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Finding the Fourth Proportional to 85,725.96, 118,302.12 and 47,486.58

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Solution

The fourth proportional to 85,725.96, 118,302.12 and 47,486.58 is: 65,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,725.96 : 118,302.12 = 47,486.58 : x
  2. Step 2: Convert to fraction form
    85,725.96/118,302.12 = 47,486.58/x
  3. Step 3: Cross multiply
    85,725.96x = 118,302.12 × 47,486.58
  4. Step 4: Simplify right side
    85,725.96x = 5,617,763,085.55
  5. Step 5: Solve for x
    x = 5,617,763,085.55/85,725.96
  6. Step 6: Final answer
    x = 65,531.64

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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.