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Finding the Fourth Proportional to 98,335.60, 147,508.89 and 28,213

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Solution

The fourth proportional to 98,335.60, 147,508.89 and 28,213 is: 42,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,335.60 : 147,508.89 = 28,213 : x
  2. Step 2: Convert to fraction form
    98,335.60/147,508.89 = 28,213/x
  3. Step 3: Cross multiply
    98,335.60x = 147,508.89 × 28,213
  4. Step 4: Simplify right side
    98,335.60x = 4,161,668,313.57
  5. Step 5: Solve for x
    x = 4,161,668,313.57/98,335.60
  6. Step 6: Final answer
    x = 42,321.08

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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.