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Finding the Fourth Proportional to 85,313.60, 127,915.73 and 35,428.13

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Solution

The fourth proportional to 85,313.60, 127,915.73 and 35,428.13 is: 53,119.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,313.60 : 127,915.73 = 35,428.13 : x
  2. Step 2: Convert to fraction form
    85,313.60/127,915.73 = 35,428.13/x
  3. Step 3: Cross multiply
    85,313.60x = 127,915.73 × 35,428.13
  4. Step 4: Simplify right side
    85,313.60x = 4,531,815,342.70
  5. Step 5: Solve for x
    x = 4,531,815,342.70/85,313.60
  6. Step 6: Final answer
    x = 53,119.49

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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.