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Finding the Fourth Proportional to 98,801.20, 148,129.80 and 39,607.60

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Solution

The fourth proportional to 98,801.20, 148,129.80 and 39,607.60 is: 59,382.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,801.20 : 148,129.80 = 39,607.60 : x
  2. Step 2: Convert to fraction form
    98,801.20/148,129.80 = 39,607.60/x
  3. Step 3: Cross multiply
    98,801.20x = 148,129.80 × 39,607.60
  4. Step 4: Simplify right side
    98,801.20x = 5,867,065,866.48
  5. Step 5: Solve for x
    x = 5,867,065,866.48/98,801.20
  6. Step 6: Final answer
    x = 59,382.54

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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.