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Finding the Fourth Proportional to 84,847.60, 127,368.60 and 51,605.20

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Solution

The fourth proportional to 84,847.60, 127,368.60 and 51,605.20 is: 77,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,847.60 : 127,368.60 = 51,605.20 : x
  2. Step 2: Convert to fraction form
    84,847.60/127,368.60 = 51,605.20/x
  3. Step 3: Cross multiply
    84,847.60x = 127,368.60 × 51,605.20
  4. Step 4: Simplify right side
    84,847.60x = 6,572,882,076.72
  5. Step 5: Solve for x
    x = 6,572,882,076.72/84,847.60
  6. Step 6: Final answer
    x = 77,466.92

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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.