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Finding the Fourth Proportional to 85,143.49, 127,730.72 and 35,196.46

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Solution

The fourth proportional to 85,143.49, 127,730.72 and 35,196.46 is: 52,801.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,143.49 : 127,730.72 = 35,196.46 : x
  2. Step 2: Convert to fraction form
    85,143.49/127,730.72 = 35,196.46/x
  3. Step 3: Cross multiply
    85,143.49x = 127,730.72 × 35,196.46
  4. Step 4: Simplify right side
    85,143.49x = 4,495,668,945.92
  5. Step 5: Solve for x
    x = 4,495,668,945.92/85,143.49
  6. Step 6: Final answer
    x = 52,801.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.