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Finding the Fourth Proportional to 98,889.60, 148,204.80 and 39,676.80

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Solution

The fourth proportional to 98,889.60, 148,204.80 and 39,676.80 is: 59,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,889.60 : 148,204.80 = 39,676.80 : x
  2. Step 2: Convert to fraction form
    98,889.60/148,204.80 = 39,676.80/x
  3. Step 3: Cross multiply
    98,889.60x = 148,204.80 × 39,676.80
  4. Step 4: Simplify right side
    98,889.60x = 5,880,292,208.64
  5. Step 5: Solve for x
    x = 5,880,292,208.64/98,889.60
  6. Step 6: Final answer
    x = 59,463.20

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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.