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Finding the Fourth Proportional to 85,220.70, 127,845.90 and 35,273.40

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Solution

The fourth proportional to 85,220.70, 127,845.90 and 35,273.40 is: 52,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,220.70 : 127,845.90 = 35,273.40 : x
  2. Step 2: Convert to fraction form
    85,220.70/127,845.90 = 35,273.40/x
  3. Step 3: Cross multiply
    85,220.70x = 127,845.90 × 35,273.40
  4. Step 4: Simplify right side
    85,220.70x = 4,509,559,569.06
  5. Step 5: Solve for x
    x = 4,509,559,569.06/85,220.70
  6. Step 6: Final answer
    x = 52,916.25

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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.