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Finding the Fourth Proportional to 98,377.56, 147,572.82 and 28,257.48

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Solution

The fourth proportional to 98,377.56, 147,572.82 and 28,257.48 is: 42,388.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,377.56 : 147,572.82 = 28,257.48 : x
  2. Step 2: Convert to fraction form
    98,377.56/147,572.82 = 28,257.48/x
  3. Step 3: Cross multiply
    98,377.56x = 147,572.82 × 28,257.48
  4. Step 4: Simplify right side
    98,377.56x = 4,170,036,009.69
  5. Step 5: Solve for x
    x = 4,170,036,009.69/98,377.56
  6. Step 6: Final answer
    x = 42,388.08

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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.