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Finding the Fourth Proportional to 85,469.60, 117,946.32 and 51,946.40

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Solution

The fourth proportional to 85,469.60, 117,946.32 and 51,946.40 is: 71,684.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,469.60 : 117,946.32 = 51,946.40 : x
  2. Step 2: Convert to fraction form
    85,469.60/117,946.32 = 51,946.40/x
  3. Step 3: Cross multiply
    85,469.60x = 117,946.32 × 51,946.40
  4. Step 4: Simplify right side
    85,469.60x = 6,126,886,717.25
  5. Step 5: Solve for x
    x = 6,126,886,717.25/85,469.60
  6. Step 6: Final answer
    x = 71,684.98

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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.