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Finding the Fourth Proportional to 84,717.60, 127,014.12 and 40,375.50

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Solution

The fourth proportional to 84,717.60, 127,014.12 and 40,375.50 is: 60,533.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,717.60 : 127,014.12 = 40,375.50 : x
  2. Step 2: Convert to fraction form
    84,717.60/127,014.12 = 40,375.50/x
  3. Step 3: Cross multiply
    84,717.60x = 127,014.12 × 40,375.50
  4. Step 4: Simplify right side
    84,717.60x = 5,128,258,602.06
  5. Step 5: Solve for x
    x = 5,128,258,602.06/84,717.60
  6. Step 6: Final answer
    x = 60,533.57

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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.