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Finding the Fourth Proportional to 86,573.01, 129,873.84 and 30,398.52

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Solution

The fourth proportional to 86,573.01, 129,873.84 and 30,398.52 is: 45,602.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,573.01 : 129,873.84 = 30,398.52 : x
  2. Step 2: Convert to fraction form
    86,573.01/129,873.84 = 30,398.52/x
  3. Step 3: Cross multiply
    86,573.01x = 129,873.84 × 30,398.52
  4. Step 4: Simplify right side
    86,573.01x = 3,947,972,522.72
  5. Step 5: Solve for x
    x = 3,947,972,522.72/86,573.01
  6. Step 6: Final answer
    x = 45,602.81

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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.