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Finding the Fourth Proportional to 86,365.63, 129,537.51 and 30,203.47

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Solution

The fourth proportional to 86,365.63, 129,537.51 and 30,203.47 is: 45,301.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,365.63 : 129,537.51 = 30,203.47 : x
  2. Step 2: Convert to fraction form
    86,365.63/129,537.51 = 30,203.47/x
  3. Step 3: Cross multiply
    86,365.63x = 129,537.51 × 30,203.47
  4. Step 4: Simplify right side
    86,365.63x = 3,912,482,297.16
  5. Step 5: Solve for x
    x = 3,912,482,297.16/86,365.63
  6. Step 6: Final answer
    x = 45,301.38

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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.