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Finding the Fourth Proportional to 98,807.60, 148,230.60 and 42,647.60

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Solution

The fourth proportional to 98,807.60, 148,230.60 and 42,647.60 is: 63,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,807.60 : 148,230.60 = 42,647.60 : x
  2. Step 2: Convert to fraction form
    98,807.60/148,230.60 = 42,647.60/x
  3. Step 3: Cross multiply
    98,807.60x = 148,230.60 × 42,647.60
  4. Step 4: Simplify right side
    98,807.60x = 6,321,679,336.56
  5. Step 5: Solve for x
    x = 6,321,679,336.56/98,807.60
  6. Step 6: Final answer
    x = 63,979.69

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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.