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Finding the Fourth Proportional to 86,389.93, 129,531.43 and 33,737.50

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Solution

The fourth proportional to 86,389.93, 129,531.43 and 33,737.50 is: 50,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,389.93 : 129,531.43 = 33,737.50 : x
  2. Step 2: Convert to fraction form
    86,389.93/129,531.43 = 33,737.50/x
  3. Step 3: Cross multiply
    86,389.93x = 129,531.43 × 33,737.50
  4. Step 4: Simplify right side
    86,389.93x = 4,370,066,619.63
  5. Step 5: Solve for x
    x = 4,370,066,619.63/86,389.93
  6. Step 6: Final answer
    x = 50,585.37

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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.