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Finding the Fourth Proportional to 84,748.60, 127,122.90 and 51,533.80

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Solution

The fourth proportional to 84,748.60, 127,122.90 and 51,533.80 is: 77,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,748.60 : 127,122.90 = 51,533.80 : x
  2. Step 2: Convert to fraction form
    84,748.60/127,122.90 = 51,533.80/x
  3. Step 3: Cross multiply
    84,748.60x = 127,122.90 × 51,533.80
  4. Step 4: Simplify right side
    84,748.60x = 6,551,126,104.02
  5. Step 5: Solve for x
    x = 6,551,126,104.02/84,748.60
  6. Step 6: Final answer
    x = 77,300.70

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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.