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Finding the Fourth Proportional to 98,800.64, 148,200.80 and 28,679.94

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Solution

The fourth proportional to 98,800.64, 148,200.80 and 28,679.94 is: 43,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,800.64 : 148,200.80 = 28,679.94 : x
  2. Step 2: Convert to fraction form
    98,800.64/148,200.80 = 28,679.94/x
  3. Step 3: Cross multiply
    98,800.64x = 148,200.80 × 28,679.94
  4. Step 4: Simplify right side
    98,800.64x = 4,250,390,051.95
  5. Step 5: Solve for x
    x = 4,250,390,051.95/98,800.64
  6. Step 6: Final answer
    x = 43,019.86

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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.